German chocolate cake mix, butter, egg, peanut butter cups, Butterfinger bars, cream cheese, peanut butter, vanilla, confectioners’ sugar, chocolate chips, and oil.

Some desserts are polite. They sit quietly on the table, look pretty, and wait their turn. This Chocolate Peanut Butter Ooey Gooey Butter Cake is not one of those desserts. This cake practically walks into the room wearing sunglasses. It has chocolate cake, peanut butter cups, Butterfinger pieces, a thick peanut butter cream cheese layer, and melted chocolate on top. It is rich. It is gooey. It is completely over the top. And honestly? That’s exactly why I love it.

If you’re a chocolate and peanut butter person, you already know the feeling. That little pause when you see both words in the same recipe title and think, “Well, yes, obviously I need that.” This Chocolate Peanut Butter Ooey Gooey Butter Cake has that same energy. It’s the kind of dessert you make when regular cake just feels a little too calm. Sometimes you want a dessert that behaves itself. Other times, you want something candy-loaded and slightly dramatic. This is the dramatic one.

The bottom layer starts with German chocolate cake mix, melted butter, and an egg. It doesn’t bake like a regular fluffy cake. It’s thicker and denser, almost like a soft brownie crust. Then you scatter chopped peanut butter cups and Butterfinger candy bars over that chocolate base. That part always makes me weirdly happy, like I’m breaking a baking rule in the best way. Candy bars in cake? Yes. We’re doing that today.

Then comes the gooey peanut butter layer. Cream cheese, peanut butter, eggs, vanilla, melted butter, and confectioners’ sugar get mixed into a rich filling that bakes up soft, sweet, and just a little wobbly in the center. That wobble is important. It’s what gives this ooey gooey butter cake its signature texture. If it jiggles slightly when you pull it from the oven, don’t panic. That’s not failure. That’s the good part.

And because apparently we’re not stopping at “rich enough,” the cake gets finished with melted chocolate chips mixed with a little oil. It spreads over the cooled cake like a smooth chocolate blanket. Is it necessary? I mean… maybe not in a strict technical sense. But emotionally? Absolutely yes. A chocolate peanut butter dessert like this deserves a proper finish.

This Chocolate Peanut Butter Ooey Gooey Butter Cake is perfect for birthdays, potlucks, holidays, bake sales, family gatherings, or any time you need a dessert that makes people stop mid-conversation. It’s sweet, rich, and definitely not shy. Small squares are usually enough, but let’s be real—someone will still go back for another “tiny piece.” Sound familiar?

What I like most is that this cake looks like a big deal but doesn’t ask too much from you. You’re using a boxed cake mix, candy bars, cream cheese, peanut butter, and chocolate chips. Nothing fussy. Nothing that requires a pastry degree or a calm, silent kitchen. Just layers of chocolate and peanut butter doing their thing. And sometimes, that’s all a dessert needs to do.

I have a soft spot for chocolate peanut butter desserts because they remind me of the candy swaps we used to do after Halloween. Peanut butter cups were basically currency. You could trade a handful of random fruity candy for one peanut butter cup if the other person wasn’t paying attention. Butterfingers were special too, because they had that crispy, flaky crunch that stuck in your teeth a little, but in a nostalgic way. Not elegant, maybe. But memorable.

The first time I made this Chocolate Peanut Butter Ooey Gooey Butter Cake, I had one of those moments where I knew it was going to be good, but I didn’t totally know what I had created. I mean, chocolate cake mix, peanut butter cups, Butterfinger bars, peanut butter cream cheese filling, and chocolate topping? That’s not a dessert. That’s a small event. I remember cutting into it after it cooled and thinking, “Okay, this might be a lot.” And it was. But it was the good kind of a lot.

This cake feels like something you’d bring to a family get-together when you want to be remembered. Not in a competitive way. Well, maybe a little. You know how dessert tables can be. There’s always one pan of brownies, one pie, one store-bought cookie tray that everyone respects but quietly ignores, and then one dessert that gets all the attention. This gooey chocolate peanut butter cake has that attention-grabbing personality.

I also learned very quickly not to cut the pieces too big. The first time, I served generous squares because I was excited and apparently had no sense of dessert reality. People loved it, but halfway through, everyone was reaching for milk or coffee like we were in a dessert marathon. This cake is rich-rich. Not “oh, that’s sweet” rich. More like “I need to sit down for a second” rich. And I say that with deep affection.

What makes this Chocolate Peanut Butter Ooey Gooey Butter Cake fun is that it’s not trying to be neat and perfect. The center is soft. The candy bits melt and shift. The chocolate topping may not slice into perfectly clean bakery squares if you’re impatient. And honestly, that’s fine. Some desserts are meant to be tidy. This one is meant to be gooey, messy, and a little ridiculous.

I know there are people who take baking very seriously, and I respect that. But I also believe there is room in the world for a boxed cake mix dessert stuffed with candy bars. Both things can be true. You can love homemade pie crust and still appreciate a cake that starts with a mix and ends with peanut butter cups. Life is complicated. Dessert doesn’t always have to be.

Why you’ll Love this Chocolate Peanut Butter Ooey Gooey Butter Cake?

You’ll love this Chocolate Peanut Butter Ooey Gooey Butter Cake because it gives you that classic chocolate and peanut butter flavor in a dessert that feels fun, rich, and a little nostalgic. It’s part cake, part dessert bar, part candy-loaded bake sale legend. The chocolate cake base is dense and soft, the candy layer adds little bites of crunch and chew, and the peanut butter cream cheese filling bakes into that sweet gooey center. It’s a lot happening in one pan, but somehow it works.

The texture is one of the biggest reasons this cake stands out. This is not a light and fluffy cake, and I don’t want to pretend it is. It’s dense on the bottom, creamy in the middle, and smooth on top. The peanut butter cups soften into the layers, while the Butterfinger pieces add that crispy candy crunch. Every bite feels a little different. Sometimes you get more chocolate. Sometimes more peanut butter. Sometimes a surprise Butterfinger bit. That unpredictability is part of the fun.

Another thing I love is how easy the recipe is for how dramatic it tastes. The base is made from cake mix, butter, and an egg. The candy layer is just chopped candy sprinkled over the top. The filling comes together in a bowl with cream cheese, peanut butter, eggs, vanilla, butter, and confectioners’ sugar. Then the chocolate topping is melted chocolate chips with a little oil. No fancy frosting. No stacking layers. No cake decorating stress. Just a very rich chocolate peanut butter butter cake doing its job.

This dessert is also perfect for sharing because a little goes a long way. If you’re taking it to a potluck, party, church supper, family reunion, bake sale, or holiday dessert table, cut it into smaller squares. People can always come back for more, and they probably will. I’ve noticed that when desserts are cut smaller, everyone pretends they’re being reasonable. “Oh, I only had two little pieces.” Sure, Aunt Linda. We believe you.

The flavor is bold without being complicated. Chocolate and peanut butter are already a beloved pair, but the cream cheese adds a little tang to keep the filling from tasting flat. The Butterfinger pieces bring crunch, and the chocolate topping makes the whole thing feel finished. Is it balanced like a delicate French pastry? No. Not even close. But it’s balanced in the way a candy bar is balanced—sweet, salty, rich, crunchy, creamy, and very satisfying.

This Chocolate Peanut Butter Ooey Gooey Butter Cake is also a good make-ahead dessert. It needs to cool before slicing anyway, so you can bake it earlier in the day or even the night before. That makes it helpful when you’re planning a party and already juggling dishes, drinks, and the mysterious disappearance of serving spoons. Why do serving spoons always vanish when you need them?

Most of all, this cake is memorable. Some desserts are nice. This one gets talked about. It’s the kind of dessert people ask about while they’re still chewing, which is maybe not the best table manners, but I get it.

Ingredient Notes

The ingredients for Chocolate Peanut Butter Ooey Gooey Butter Cake are simple, but each one matters because this dessert is all about layers. The cake mix gives you the chocolate base, the candy bars bring that fun texture, the cream cheese and peanut butter create the gooey filling, and the chocolate topping finishes everything off. It’s not fancy baking, exactly, but it’s smart baking. Big difference.

• German chocolate cake mix: German chocolate cake mix creates the bottom layer of this Chocolate Peanut Butter Ooey Gooey Butter Cake. When it’s mixed with melted butter and an egg, it becomes a thick dough instead of a pourable batter. That dough gets pressed into the pan and bakes into a dense, chocolatey base. If you can’t find German chocolate cake mix, you can use devil’s food cake mix, chocolate fudge cake mix, or regular chocolate cake mix. The flavor will shift a little, but honestly, with this much peanut butter and candy involved, it’s still going to be pretty wonderful.
• Butter: Butter is used in both the cake base and the peanut butter cream cheese filling. In the base, it helps hold the cake mix together and gives it that dense, almost brownie-like texture. In the filling, it adds richness and helps create the soft gooey center. This is not a low-butter dessert. I feel like we should all accept that early and move forward happily.
• Eggs: Eggs help bind the layers and give the filling enough structure to set without becoming dry. One egg goes into the cake layer, and three eggs go into the cream cheese layer. Add the eggs one at a time when making the filling, mostly because it helps everything mix more smoothly. It’s a small step, but it does make a difference.
• Peanut butter cups: Large peanut butter cups are cut into pieces and scattered over the chocolate base. They melt a little as the cake bakes, creating pockets of chocolate and peanut butter throughout the dessert. The pieces do not need to be perfect. Actually, I prefer them a little uneven because then every slice feels like a small candy treasure hunt.
• Butterfinger candy bars: Butterfinger bars add crisp, flaky candy crunch and extra peanut butter flavor. They keep the cake from being only soft and creamy, which I think is important. A little crunch makes each bite more interesting. Roughly chop them, but don’t crush them into dust. You want pieces, not candy sand.
• Cream cheese: Softened cream cheese gives the gooey layer its creamy texture and slight tang. That tang is helpful because the cake is very sweet. Make sure the cream cheese is softened before mixing, or you may end up with little lumps. Not the end of the world, but smooth filling is nicer.
• Peanut butter: Peanut butter is the heart of the filling. Creamy peanut butter works best because it blends easily with the cream cheese and sugar. I’d avoid natural peanut butter unless you stir it extremely well, because it can separate and make the filling oily. Standard creamy peanut butter is the safest choice here, and this dessert is already chaotic enough without oil separation joining the party.
• Vanilla: Vanilla adds warmth and rounds out the chocolate and peanut butter flavors. It’s just one teaspoon, but it helps the filling taste more complete. Little ingredients can still pull their weight.
• Confectioners’ sugar: Confectioners’ sugar sweetens and thickens the cream cheese layer. Four cups may look like a lot because, well, it is. But this is an ooey gooey butter cake, so sweetness is part of the deal. Add it slowly unless you want your kitchen to look like a powdered sugar snow globe. I’ve done it. Pretty for half a second, annoying for much longer.
• Chocolate chips: Chocolate chips are melted for the topping. Semi-sweet chocolate chips are a nice choice because they keep the topping from becoming too sweet, but milk chocolate works if you want a sweeter finish. Dark chocolate would also be good if you like a deeper flavor.
• Vegetable or canola oil: A little oil makes the melted chocolate smoother and easier to spread. It also keeps the topping from setting too hard, which makes slicing easier. Use a neutral oil like vegetable or canola so it doesn’t change the flavor.

How to Make Chocolate Peanut Butter Ooey Gooey Butter Cake?

Making Chocolate Peanut Butter Ooey Gooey Butter Cake is easier than the long name suggests. There are a few layers, yes, but none of them are difficult. You’ll press the chocolate cake mix layer into the pan, scatter candy over it, spread the peanut butter cream cheese filling on top, bake until puffed and slightly jiggly, let it cool, and finish with melted chocolate. It sounds like a lot, but once you start, it moves along pretty smoothly. The waiting-to-cool part is the hardest. Sorry, but it’s true.

Step 1: Preheat the Oven

Preheat the oven to 350°F. If you are using a glass pan, reduce the temperature to 325°F. Glass holds heat differently than metal, so the lower temperature helps prevent the edges from baking too quickly before the center is done. With a gooey cake, this matters because the center needs time to set without drying out.

Step 2: Prepare the Pan

Spray a 9×12-inch pan with cooking spray. Make sure the bottom and sides are coated well because this cake is sticky and gooey by design. If you want easier lifting and neater slices, you can line the pan with parchment paper too. I don’t always do it, but when I do, I feel very organized. Briefly.

Step 3: Make the Chocolate Cake Base

In a mixing bowl, combine the German chocolate cake mix, melted butter, and egg. Beat until everything is fully combined. The mixture will be thick and dough-like, not loose like regular cake batter. Press it evenly into the bottom of the prepared pan. Use your hands, a spatula, or whatever makes the least mess. The goal is simply to cover the bottom with an even chocolate layer.

Step 4: Add the Candy Layer

Cut each large peanut butter cup into 4 pieces and roughly chop the Butterfinger candy bars. Scatter both candies evenly over the chocolate cake base. Try to spread them all the way to the edges so every slice gets a little candy. This is the layer that makes the cake feel playful and nostalgic, like someone raided the Halloween bowl and made excellent choices.

Step 5: Mix the Cream Cheese, Peanut Butter, and Vanilla

In a large bowl, beat the softened cream cheese, peanut butter, and vanilla until smooth. This forms the base of the gooey filling. If the cream cheese is still a little cold, the mixture may look lumpy at first. Keep mixing. It usually smooths out, and if there are one or two tiny lumps left, nobody is going to write a report about it.

Step 6: Add the Eggs

Add the eggs one at a time, mixing after each addition. This helps the filling stay smooth and evenly blended. The mixture will loosen as the eggs are added and start looking more like a creamy batter.

Step 7: Add the Melted Butter

Pour in the melted butter and mix until combined. The filling should look rich, thick, and smooth. This is where that classic ooey gooey butter cake texture starts coming together. You can almost see the dessert getting serious.

Step 8: Add the Confectioners’ Sugar

Add the confectioners’ sugar and mix until smooth. Since this recipe uses 4 cups, start slowly unless you enjoy powdered sugar clouds. I always think I’m being careful, and somehow there’s still a little dusting on the counter. It happens. Baking has weather.

Step 9: Spread the Filling Over the Candy

Spread the peanut butter cream cheese filling evenly over the candy layer. Use a spatula to smooth it across the pan. Try to cover the candy pieces so the top bakes evenly. The pan will be full, and that is okay. This cake is not here to be modest.

Step 10: Bake Until Puffed and Slightly Jiggly

Bake for about 50 minutes. If you are using a glass pan, it may take just over 1 hour. The cake is done when the center is puffed and only slightly jiggly. It should not look wet or liquid, but it should not be firm like a regular cake either. That slight jiggle is part of the gooey texture. If you overbake it, you’ll lose some of that soft center, and that would be a little sad.

Step 11: Let the Cake Cool

Remove the cake from the oven and let it cool completely or at least until the layers have settled. As it cools, the center will sink slightly and firm up enough to slice. I know waiting is annoying. The kitchen smells like chocolate and peanut butter, and patience feels unreasonable. But cooling really does help the cake cut better.

Step 12: Make the Chocolate Topping

Place the chocolate chips in a microwave-safe bowl and microwave for 1 minute. Stir, then add the vegetable or canola oil. Stir until smooth. If the chocolate needs more time, microwave it in short bursts, stirring between each one. The oil helps the chocolate spread easily and keeps the topping softer once it sets.

Step 13: Top, Set, and Slice

Spread the melted chocolate over the cooled cream cheese layer. Smooth it gently with a spatula and let it set slightly before slicing. Cut into small squares or bars. I recommend smaller pieces because this cake is rich, but you know your people. Some families hear “small piece” and take that personally.

Storage Options

This Chocolate Peanut Butter Ooey Gooey Butter Cake stores well, which is lucky because it is rich enough that leftovers are very possible. Since the cake has a cream cheese layer, it should be refrigerated after cooling. The texture firms up in the fridge, but the center stays soft and dense. If you like a gooier slice, just let it sit out for a few minutes before serving. Small effort, big reward.

• Room temperature: Because of the cream cheese layer, this cake should not sit out for too long. It can stay at room temperature briefly while serving, but after about 2 hours, cover it and refrigerate it. If your kitchen is warm, move it to the fridge sooner. Food safety is not glamorous, but neither is regretting dessert later.
• Refrigerator: Store leftover Chocolate Peanut Butter Ooey Gooey Butter Cake in an airtight container or cover the pan tightly with plastic wrap or foil. Refrigerate for up to 5 days. The cake will become firmer when chilled, which actually makes it easier to slice. You can eat it cold or let it rest at room temperature for 15 to 20 minutes for a softer, gooier texture.
• Freezer: You can freeze this gooey chocolate peanut butter cake for up to 2 months. Cut it into squares first, then wrap each piece tightly in plastic wrap and place the wrapped pieces in a freezer-safe bag or container. Freezing individual pieces is especially nice because you can thaw one slice at a time. Dessert emergencies are real, and it’s best to be prepared.
• Thawing: Thaw frozen slices in the refrigerator overnight. You can also let a slice sit at room temperature for a short time before serving. The texture may be a little softer after freezing and thawing, but the flavor will still be rich and chocolatey.
• Make-ahead option: This Chocolate Peanut Butter Ooey Gooey Butter Cake is a great make-ahead dessert because it needs cooling time anyway. You can bake it the day before, refrigerate it, and add the chocolate topping after cooling or before serving. If you add the topping ahead, let it set before covering so it doesn’t smear everywhere.
• Serving after refrigeration: For clean slices, serve the cake chilled. For a softer, gooier bite, let it sit at room temperature for a few minutes first. I like it both ways, which is probably not helpful, but it’s true. Chilled tastes more like a dense candy bar, while room temperature feels more like a soft gooey cake.

Variations & Substitutions

This Chocolate Peanut Butter Ooey Gooey Butter Cake already has plenty going on, but you can absolutely play with it. The basic formula is flexible: chocolate base, candy layer, peanut butter cream cheese filling, chocolate topping. Once you understand that, you can swap flavors, candies, and toppings based on what you like or what’s hiding in your pantry. Sometimes the best desserts come from a very unserious candy drawer.

• Use a different chocolate cake mix: German chocolate cake mix works beautifully, but devil’s food, chocolate fudge, or regular chocolate cake mix can also be used. Devil’s food makes the base darker and richer, while chocolate fudge cake mix gives it a more brownie-like flavor. The result will still feel like a chocolate peanut butter gooey butter cake, just with a slightly different chocolate personality.
• Swap the candy bars: Peanut butter cups and Butterfinger bars are a great combo, but chopped Snickers, Reese’s Pieces, peanut butter chips, chocolate-covered peanuts, or chopped chocolate bars can work too. I’d stick with candies that pair well with peanut butter and chocolate. This is not the place for gummy worms. Probably.
• Use crunchy peanut butter: If you like texture, crunchy peanut butter can be used in the filling. The layer won’t be quite as smooth, but it will have little peanut pieces throughout. If you prefer a creamy, silky filling, stick with regular creamy peanut butter.
• Add peanut butter chips: Sprinkle peanut butter chips over the candy layer or add a small handful to the cream cheese filling. It gives the cake even more peanut butter flavor. Just keep the amount reasonable unless you want the cake to become peanut butter chaos. Not necessarily bad, but still.
• Use milk chocolate or dark chocolate topping: Semi-sweet chocolate chips are a nice middle ground, but milk chocolate makes the topping sweeter, and dark chocolate adds a deeper flavor. If your crowd loves sweet desserts, milk chocolate works. If they like something slightly less sweet, dark chocolate is a good choice.
• Add chopped salted peanuts: Sprinkle chopped salted peanuts over the chocolate topping before it sets. The salt helps balance the sweetness and adds crunch. I love this option because sweet and salty desserts always feel a little more grown-up, even when they’re full of candy bars.
• Make it extra chocolatey: Add mini chocolate chips over the candy layer or drizzle more melted chocolate over the finished cake. It’s not required, but if you’re making this for serious chocolate lovers, extra chocolate will not be rejected.
• Try almond butter or cookie butter: Peanut butter is the classic choice, but almond butter or cookie butter can be used for a twist. Almond butter will taste nuttier and a bit more subtle. Cookie butter will make the dessert sweeter and spiced. I’m not saying it would be dangerously good, but… it might be.
• Cut into small bars: This cake is rich, so smaller bars are usually the way to go. They’re easier for parties, bake sales, and dessert trays. Plus, smaller bars make people feel like they can take another one. This is dessert psychology, and I support it.

What to Serve With Chocolate Peanut Butter Ooey Gooey Butter Cake?

This Chocolate Peanut Butter Ooey Gooey Butter Cake is rich enough to be the whole dessert moment, so it pairs best with simple drinks and light sides. You don’t need to do much. The cake already has chocolate, peanut butter, candy bars, cream cheese, and a topping. It has arrived. Everything else should be calm and supportive, like a friend holding your purse while you make questionable but fun choices.

• Cold milk: Cold milk is the classic choice with this chocolate peanut butter dessert. It cuts through the sweetness and makes the whole thing feel nostalgic, like an after-school snack turned into a full-blown dessert situation. If you serve this cake to kids, or adults who still love kid desserts, milk is perfect.
• Hot coffee: Coffee is great because the slight bitterness balances the sweet, gooey filling. Serve it with regular coffee, espresso, or cold brew. I especially like this pairing after dinner because the cake is rich and the coffee helps keep everything from feeling too heavy. Also, sometimes you need dessert and caffeine. Life happens.
• Vanilla ice cream: Vanilla ice cream is wonderful with Chocolate Peanut Butter Ooey Gooey Butter Cake, especially if the cake is slightly warm or room temperature. The cold ice cream melts into the gooey layer and makes the whole thing feel extra special. It’s a lot, but in a very good way.
• Whipped cream: A small dollop of whipped cream adds lightness. Since this cake is rich, whipped cream gives a softer contrast without competing with the chocolate and peanut butter. Keep it simple and not too sweet.
• Fresh strawberries: Strawberries add brightness and a little tartness. They help cut through the richness and make the plate look pretty with almost no effort. Chocolate and strawberries are already friends, so this pairing makes sense.
• Banana slices: Banana, peanut butter, and chocolate are a classic trio. A few banana slices on the side give the cake a banana-split feeling. This is especially nice if you’re serving it slightly warm with ice cream.
• Salted peanuts: Salted peanuts add crunch and salty contrast. Sprinkle them over each slice or serve them on the side. The salt makes the chocolate and peanut butter taste even better, at least to me.
• Caramel sauce: A light drizzle of caramel sauce can make this cake taste even more like a candy bar. Use a small amount because the cake is already sweet. But if you love rich desserts, caramel fits right in.
• Holiday dessert tray: Cut the cake into small bars and serve it with cookies, brownies, fudge, or peanut butter balls. This Chocolate Peanut Butter Ooey Gooey Butter Cake works beautifully on a dessert tray because small pieces are satisfying and easy to grab.
• Potluck dessert table: This cake is a great potluck dessert because it stands out. Serve it chilled or at room temperature, cut into squares, and don’t be surprised when someone asks what’s in it before they even finish chewing. It happens.

FAQ

Can I use a different cake mix?

Yes. German chocolate cake mix works well, but devil’s food, chocolate fudge, or regular chocolate cake mix can also be used. The flavor will change slightly, but the recipe will still work.

How do I know when the cake is done?

The cake is done when the center is puffed and only slightly jiggly. It should not look wet or liquid, but it should not be fully firm like a regular cake. The soft center is part of the ooey gooey butter cake texture.

Why is my cake still jiggly in the center?

A slight jiggle is normal. This is a gooey butter cake, so the center should stay soft. If the center looks liquid, bake it a little longer. If it just wobbles gently, let it cool and it should set more as it rests.

Can I use natural peanut butter?

You can, but I would use standard creamy peanut butter if possible. Natural peanut butter can separate and may make the filling oily. If you use natural peanut butter, stir it very well first.

This Chocolate Peanut Butter Ooey Gooey Butter Cake is rich, gooey, candy-filled, and made for people who believe chocolate and peanut butter belong together as often as possible. It has a dense chocolate cake mix base, peanut butter cups, Butterfinger pieces, creamy peanut butter filling, and a smooth chocolate topping. Subtle? No. Delicious? Very much yes.

Make this Chocolate Peanut Butter Ooey Gooey Butter Cake for birthdays, potlucks, holidays, family gatherings, bake sales, or any day that needs a dessert with a little drama. Would you serve it chilled, slightly warm, or with a scoop of vanilla ice cream melting on top? Can’t wait to hear what you think!