Unsalted butter, all-purpose flour, Dutch cocoa powder, baking soda, salt, brown sugar, granulated sugar, egg, vanilla extract, mini marshmallows, and demerara sugar.

I have a soft spot for desserts that feel a little nostalgic. Not fancy, not overly polished, just the kind of treat that makes you pause for a second and think, oh wow, I needed that. These Chocolate Marshmallow Cookies are exactly that kind of cookie for me. They’re fudgy, chewy, deeply chocolatey, and stuffed with mini marshmallows that melt into the center like a tiny hot cocoa surprise. Honestly, they make me feel like I should be curled up under a blanket with a mug nearby, even if it’s just a random Tuesday and the laundry is still waiting.

The first time I made these Chocolate Marshmallow Cookies, I was craving brownies but didn’t have the emotional energy for a whole brownie situation. You know what I mean? Brownies are simple, yes, but then you have to bake the pan, wait for it to cool, cut them neatly, and somehow not destroy the first row while “testing” a corner piece. Sound familiar? I wanted that fudgy chocolate flavor, but faster. Something I could mix in a bowl, bake quickly, and eat without pretending I was going to share evenly.

That’s why these marshmallow stuffed cookies made so much sense. They have the rich, brownie-like texture I was craving, but they bake in about 9 to 10 minutes. The dough rests for just 10 minutes, which is basically enough time to wipe the counter, line up the marshmallows, or stand there impatiently wondering if cookie dough can tell when you’re staring at it. I’m not saying it can. I’m just saying I’ve wondered.

What I love most is the marshmallow center. You tuck about 6 mini marshmallows into each cookie dough ball, seal the dough around them, and hope for the best. Most of the time, the marshmallows stay tucked inside and melt into this soft, gooey pocket. Sometimes one escapes. Sometimes two. It happens. And honestly, those little chewy marshmallow edges that caramelize on the pan? Not exactly a tragedy. They’re kind of delicious in a messy, homemade way.

These fudgy chocolate cookies remind me of hot chocolate, brownies, and campfire s’mores all meeting up in one cookie. Maybe that sounds dramatic, but I stand by it. The Dutch processed cocoa powder gives them that deep, smooth chocolate flavor, while the brown sugar keeps the centers chewy and soft. The mini marshmallows add sweetness and fun, but not in a childish way. More like a “why don’t we put marshmallows in more things?” kind of way.

I also appreciate that these brownie-like cookies don’t need a stand mixer. No fancy equipment. No long chilling time. No complicated decorating that makes you question your life choices halfway through. Just melted butter, a whisk, a bowl, a spatula, and a little bit of cookie-stuffing patience. That’s my kind of baking, especially when the day has already been loud enough.

There’s also something cute about the optional demerara or turbinado sugar on top. It gives the cookies a tiny sparkle and a little crunch. Not required, but nice. Like earrings for cookies. I know, odd comparison, but that’s how it feels — just a small finishing touch that makes them look like they tried a little harder than they actually did.

And yes, I do love the round cookie cutter trick. As soon as the cookies come out of the oven, you take a round cookie cutter slightly bigger than the cookie and gently swirl it around each one. It helps make the cookies rounder and a bit thicker. Is this step absolutely necessary? No. Are slightly wonky cookies still wonderful? Absolutely. But there’s something weirdly satisfying about watching a warm cookie tuck itself into a neater circle. It’s like giving it a tiny post-bake makeover.

These easy chocolate cookies are the kind of treat I’d make for a movie night, a rainy afternoon, a casual dessert tray, or honestly, just because the pantry had marshmallows and I had a chocolate craving. They’re not fussy. They’re cozy. They feel homemade in the best way — a little imperfect, a little gooey, and very hard to ignore once they’re cooling on the tray.

So if you’re craving something rich, quick, and playful, these Chocolate Marshmallow Cookies are such a good one to try. They give you the brownie-like chew, the marshmallow-stuffed center, and that deep chocolate flavor without making you wait all afternoon. And sometimes, that’s exactly the kind of dessert we need.

Why you’ll Love these Chocolate Marshmallow Cookies?

You’ll love these Chocolate Marshmallow Cookies because they sit right between a cookie, a brownie, and a mug of hot cocoa. That’s a pretty cozy place to be. The edges set just enough, the centers stay soft and chewy, and the mini marshmallows melt inside like a sweet little surprise. They feel fun, but not complicated, which is honestly one of my favorite combinations in baking.

These fudgy chocolate cookies are also wonderfully simple. You don’t need a mixer, and you don’t have to chill the dough for hours. You melt the butter, whisk it with the sugars, add the egg and vanilla, fold in the dry ingredients, let the dough rest, then stuff and bake. It feels very doable, even on a busy day. Or on a lazy day. Actually, especially on a lazy day.

The texture is one of the biggest selling points. These brownie-like cookies have that rich, chewy bite that makes them feel a little more special than a plain chocolate cookie. The Dutch processed cocoa powder gives them deep chocolate flavor, while the brown sugar helps keep them soft. Then the marshmallow center adds that gooey sweetness that makes each cookie feel just a bit unexpected.

I also love that these marshmallow stuffed cookies are ready quickly. With 15 minutes of prep, 9 minutes of baking, and a short dough rest, you can have homemade cookies in less than half an hour. That’s a big deal when you want dessert now, not in three business days. We’ve all had those chocolate emergencies, right?

The recipe makes about 19 cookies, which feels like a nice, manageable batch. It’s enough to share with family, bring to a small gathering, or tuck into lunchboxes. But it’s not such a huge batch that you’re staring at piles of cookies wondering what life decision led you here. Of course, if your house is full of cookie people, 19 may still disappear suspiciously fast.

These easy chocolate cookies also look lovely without much effort. The demerara sugar gives a little sparkle, and the cookie cutter swirl trick helps them look round and bakery-ish. But even if they come out with a marshmallow bubble on one side or a slightly lopsided edge, they still look charming. Homemade cookies should be allowed to have personality, don’t you think?

Most of all, these cookies are comforting. They’re the kind of dessert that makes the kitchen smell like chocolate and makes people wander in asking, “Are those done yet?” They’re rich, sweet, a little gooey, and just playful enough to make an ordinary day feel nicer.

Ingredient Notes

The ingredients for Chocolate Marshmallow Cookies are simple, but each one has a real job to do. The melted butter makes the dough rich, the cocoa gives it deep chocolate flavor, the brown sugar keeps everything chewy, and the mini marshmallows bring that soft, gooey center. It’s a small lineup, but when it works, it really works.

• Unsalted Butter: Melted unsalted butter gives these fudgy chocolate cookies their rich flavor and helps create that soft, brownie-like texture. Let it cool slightly before mixing it with the sugars. It should be warm and liquid, but not hot. I’ve rushed melted butter before, and it can make the dough feel greasy or a little too loose. So give it a few minutes to calm down. Butter needs a breather too, apparently.
• All-Purpose Flour: All-purpose flour gives the cookies structure so they can hold the marshmallow filling without falling apart. You’ll need 165 g, or about 1 ¼ cups. If you measure with cups, try not to pack the flour tightly. Too much flour can make these Chocolate Marshmallow Cookies drier than you want, and the whole point here is soft, chewy, fudgy goodness.
• Dutch Processed Cocoa Powder: Dutch processed cocoa powder is what gives these brownie-like cookies their deep color and smooth chocolate flavor. Since there’s no melted chocolate in the dough, the cocoa powder really matters. I prefer Dutch processed cocoa here because it tastes richer and less sharp, but use a cocoa you genuinely like. The chocolate flavor is the star, after all.
• Baking Soda: Baking soda helps the cookies spread slightly and bake with the right texture. You only need ¾ teaspoon, but it matters. Too much can give cookies a strange taste, and too little can affect the way they spread. It’s one of those tiny ingredients that quietly holds the whole thing together like the responsible friend in the group.
• Salt: Salt balances the sweetness and helps the chocolate flavor stand out. These marshmallow stuffed cookies have both sugar and marshmallows, so the salt keeps everything from tasting one-note sweet. You won’t taste “salt” exactly. You’ll just notice that the chocolate tastes deeper and better.
• Light Brown Sugar: Light brown sugar adds moisture, chewiness, and a soft caramel-like flavor. It’s one of the reasons these Chocolate Marshmallow Cookies stay tender in the center. Brown sugar and chocolate are such a cozy pair. They make the cookies taste warm and rich without needing anything fancy.
• White Granulated Sugar: Granulated sugar adds sweetness and helps the cookies set around the edges. Using both brown sugar and white sugar gives the best balance — chewy centers, lightly set edges, and a texture that feels somewhere between cookie and brownie. A very nice place to land, honestly.
• Egg: One large room-temperature egg helps bind the dough together and adds moisture. If you forgot to take the egg out ahead of time, place it in a bowl of warm water for a few minutes. I do this more often than I’d like to admit. Room-temperature egg mixes more smoothly, but we’re not aiming for perfection here — just better cookies.
• Vanilla Extract: Vanilla extract adds warmth and rounds out the chocolate flavor. It’s a small amount, but it makes the dough taste more complete. Chocolate desserts often taste better with vanilla in the background, kind of like how a good playlist makes cleaning the kitchen slightly less painful.
• Mini Marshmallows: Mini marshmallows are the fun part of these marshmallow stuffed cookies. You’ll tuck about 6 mini marshmallows into the center of each dough ball, then seal the dough around them. Try to cover them completely so they don’t all leak out during baking. But if a little marshmallow escapes, don’t panic. It usually turns chewy and delicious around the edge.
• Demerara or Turbinado Sugar: Demerara or turbinado sugar is optional, but it adds a little crunch and sparkle on top. It makes these easy chocolate cookies look a bit more finished without requiring any decorating. If you don’t have it, skip it. The cookies will still be rich, fudgy, and gooey where it counts.

How to Make Chocolate Marshmallow Cookies?

Making Chocolate Marshmallow Cookies is pretty simple, and you don’t need anything fancy. You’ll melt the butter, mix the dry ingredients, whisk the butter with the sugars, add the egg and vanilla, fold everything together, rest the dough, stuff it with marshmallows, and bake. The only slightly fiddly part is sealing the marshmallows inside, but even that gets easier after the first couple.

Step 1: Melt and cool the butter

Start by melting the unsalted butter, then set it aside to cool slightly. You want the butter melted, but not hot. Warm butter mixes beautifully with the sugars and helps give these fudgy chocolate cookies their chewy texture. If the butter is too hot, it can make the dough greasy or mess with the egg when you add it later. Give it a few minutes. It’s worth it.

Step 2: Preheat the oven and prepare the trays

Preheat your oven to 180°C / 350°F / 160°C fan-forced. Line 2 large baking trays with baking paper. This helps prevent sticking and makes cleanup so much easier. And I don’t know about you, but after making cookies, I want to eat cookies — not stand at the sink scrubbing chocolate off a tray.

Step 3: Mix the dry ingredients

In a medium bowl, whisk together the flour, Dutch processed cocoa powder, baking soda, and salt. Set it aside. Whisking helps break up little cocoa lumps and spreads the baking soda and salt evenly through the flour. Cocoa powder loves to clump together like it’s keeping secrets, so this step helps.

Step 4: Mix the butter and sugars

In a large mixing bowl, add the light brown sugar and granulated sugar to the melted, slightly cooled butter. Whisk until the mixture looks smooth and glossy. It won’t look like traditional creamed butter and sugar, and that’s totally fine. Melted butter gives these Chocolate Marshmallow Cookies that dense, chewy, brownie-like feel.

Step 5: Add the egg and vanilla

Add the room-temperature egg and vanilla extract to the butter and sugar mixture. Whisk until smooth. The egg brings the dough together, and the vanilla adds that warm, cozy flavor that makes chocolate taste even better. At this point, the mixture should look thick, shiny, and very promising.

Step 6: Fold in the dry ingredients

Add the dry ingredients to the wet mixture and fold with a spatula until just combined. Stop when you no longer see dry streaks of flour or cocoa. Try not to overmix. Overmixing can make these brownie-like cookies tougher, and we want them soft and fudgy, not like something you’d use to prop open a door. A gentle hand is your friend here.

Step 7: Let the dough rest

Let the dough sit for 10 minutes before shaping. This short rest helps the dough firm up a little so it’s easier to handle, and it also helps the cookies keep their shape. It’s not a long chill, thankfully. Just enough time to get the marshmallows ready, clear a little counter space, or sneak a sip of coffee.

Step 8: Fill the cookies with marshmallows

Take about 2 tablespoons of dough and roll it into a ball, or use a cookie scoop. Make a dent in the center and add about 6 mini marshmallows. Carefully pinch the dough around the marshmallows until they are fully covered. This step can feel a little awkward at first, like wrapping a tiny chocolate blanket around marshmallows, but after one or two, you’ll get the hang of it.

Step 9: Shape the cookie balls

Lightly roll each filled dough ball between your hands to make it round. Place the cookies on the prepared trays, leaving about 2 inches between each one. They will spread slightly as they bake. If you see any marshmallows peeking out, cover them with a little dough. The more sealed they are, the less likely they are to leak everywhere.

Step 10: Add sugar and bake

Sprinkle a little demerara or turbinado sugar over the tops, if using. Bake for 9 to 10 minutes. The edges should look set, but the centers should still look soft. Don’t wait for the cookies to look firm all over. These Chocolate Marshmallow Cookies will continue to set as they cool, and pulling them out at the right time keeps them fudgy.

Step 11: Shape the warm cookies, if desired

Right after the trays come out of the oven, use a round cookie cutter slightly larger than each cookie and gently swirl it around the warm cookie. This helps make the cookies rounder and slightly thicker. It’s optional, but honestly, it’s fun. It makes you feel like you know some secret bakery trick. And maybe now you do.

Step 12: Cool the cookies

Let the cookies cool on the trays for 10 to 15 minutes, or until they are firm enough to move without breaking. Then transfer them to a wire rack to cool completely. These marshmallow stuffed cookies are delicate while warm because the centers are soft, so don’t rush this step. I know. Waiting near warm cookies feels unfair.

Storage Options

Chocolate Marshmallow Cookies store nicely once they are fully cooled. Because they have soft marshmallows inside, it’s best to keep them covered so the cookies stay chewy and the centers don’t dry out. Left uncovered, they can lose that soft texture pretty quickly, and nobody wants a tired cookie. Especially not a tired chocolate cookie.

Store the cooled cookies in an airtight container at room temperature for up to 3 days. If you need to stack them, place parchment paper between the layers, especially if any marshmallow has melted near the edges. The cookies will firm up as they cool, but they should still stay soft and chewy inside. I think they’re best on the first or second day, but day three is still very snackable.

You can refrigerate these marshmallow stuffed cookies for up to 5 days, though I usually prefer them at room temperature. The fridge can make the marshmallow center a bit firmer, so let the cookies sit out for a few minutes before serving. That little rest helps the texture soften again. Cold cookies are fine, but soft, fudgy cookies are better. At least that’s my very unofficial opinion.

For longer storage, freeze the baked Chocolate Marshmallow Cookies for up to 2 months. Let them cool completely first, then place them in a freezer-safe container with parchment paper between layers. Thaw them at room temperature before serving. You can warm one briefly in the microwave if you want that gooey center again, but keep it short. Marshmallows can go from soft to volcanic very quickly.

You can also freeze the unbaked stuffed dough balls. Shape the dough around the marshmallows, freeze the dough balls on a tray until firm, then transfer them to a freezer-safe bag or container. When you’re ready to bake, let them thaw slightly or bake from chilled, adding an extra minute or two if needed. This is a lovely little future-you trick for sudden chocolate cravings.

If you’re making these easy chocolate cookies for a party, bake sale, or dessert tray, I’d bake them the same day or the day before if possible. They’re still good later, but fresh cookies have the best fudgy texture and soft marshmallow middle. Plus, your kitchen smells like chocolate while they bake, and that’s basically part of the recipe.

Variations & Substitutions

These Chocolate Marshmallow Cookies are already rich, chewy, and fun, but you can definitely play around with the recipe. The chocolate dough is a great base for extra flavors, different sugars, and cozy mix-ins. Just try not to overload the dough too much, because you still need enough dough to wrap around the marshmallows. They need to stay tucked in there, like tiny marshmallow secrets.

• Use Regular Cocoa Powder: Dutch processed cocoa powder gives these fudgy chocolate cookies a deep, smooth flavor, but regular unsweetened cocoa powder can work if that’s what you have. The cookies may taste a little lighter and slightly sharper, but they’ll still be chocolatey and good. I’d use Dutch if you have it, but I wouldn’t skip the whole recipe over cocoa powder. Chocolate cookies are too important.
• Add Chocolate Chips: Fold a small handful of mini chocolate chips into the dough if you want even more chocolate flavor. Mini chips work best because they don’t get in the way as much when you’re wrapping the dough around the marshmallows. This makes the cookies extra rich and even more brownie-like. Very dangerous. Very worth it.
• Use Large Marshmallows: If you don’t have mini marshmallows, cut large marshmallows into smaller pieces. Keep them small enough that you can seal the dough around them completely. Big marshmallow chunks may leak out during baking, which isn’t the end of the world, but it can get sticky. Delicious sticky, but still sticky.
• Try Flavored Marshmallows: Flavored marshmallows can make these marshmallow stuffed cookies a little quirky and fun. Peppermint marshmallows would be great for the holidays, while strawberry marshmallows could give a chocolate-covered-strawberry kind of vibe. It might sound odd at first, but I can see it working. Sometimes the fun ideas are the slightly weird ones.
• Add Espresso Powder: Add about ½ teaspoon of espresso powder to the dry ingredients if you want the chocolate flavor to taste deeper. It won’t make the cookies taste strongly like coffee. It just makes the cocoa flavor richer. This is one of those tiny baking tricks that feels almost suspiciously effective.
• Use Dark Brown Sugar: Swap the light brown sugar for dark brown sugar if you want a deeper, warmer flavor. Dark brown sugar has more molasses flavor, so the cookies may taste a little richer and softer. It pairs beautifully with chocolate and marshmallow, especially if you like a darker, more fudgy cookie.
• Add a Pinch of Cinnamon: A tiny pinch of cinnamon adds warmth without making the cookies taste like spice cookies. It’s subtle, but it can make these brownie-like cookies feel extra cozy. This is especially nice in fall or winter, or whenever you want the cookies to taste like they’re wearing a sweater.
• Make Them S’mores-Inspired: Add crushed graham crackers to the dough or sprinkle some crumbs on top before baking. Since the cookies already have chocolate and marshmallow, graham cracker crumbs turn them into a s’mores-style treat. It’s like campfire dessert without the smoke, bugs, or trying to find one decent roasting stick.
• Skip the Demerara Sugar: Demerara or turbinado sugar is optional, so don’t worry if you don’t have it. The cookies will still be soft, chewy, chocolatey, and marshmallow-filled. The sugar just adds a little crunch and sparkle on top. Nice, but not essential.
• Make Smaller Cookies: You can make smaller cookies, but use fewer marshmallows in each one and reduce the baking time slightly. Smaller cookies bake faster, so watch them closely. The goal is soft Chocolate Marshmallow Cookies, not tiny chocolate rocks. Cute is good. Overbaked is less good.

What to Serve With Chocolate Marshmallow Cookies?

Chocolate Marshmallow Cookies are rich, fudgy, and sweet, so they pair best with simple drinks and cozy dessert extras. They’re perfect for movie nights, lunchbox treats, rainy afternoons, dessert boards, or those evenings when you just need something chocolatey and comforting. Since they already have chocolate and marshmallow inside, creamy, warm, or slightly bitter pairings work especially well.

• Milk: A cold glass of milk is the classic choice with Chocolate Marshmallow Cookies. The cookies are rich and chocolatey, and the milk balances the sweetness. It also makes the marshmallow center feel extra nostalgic, almost like a childhood treat dressed up as a fudgy cookie. Simple, but it works every time.
• Coffee: Coffee pairs beautifully with these fudgy chocolate cookies because the bitterness balances the sweet marshmallow filling. A hot coffee, espresso, iced coffee, or latte all work well. I love this pairing for an afternoon treat, especially when you need a little pick-me-up and maybe a tiny break from everything.
• Hot Chocolate: Hot chocolate with marshmallow stuffed cookies might sound like a lot of marshmallow, and okay, it is. But in the best way. The cookies already taste a little like hot cocoa in cookie form, so pairing them with a warm mug makes the whole thing extra cozy. Add whipped cream if you’re fully committing. Why not?
• Vanilla Ice Cream: Serve a warm cookie with a scoop of vanilla ice cream for an easy dessert. The fudgy chocolate cookie, soft marshmallow center, and cold ice cream are so good together. Add a drizzle of chocolate or caramel sauce if you want to make it more dramatic. Dessert should have a little drama sometimes.
• Fresh Strawberries: Strawberries add a fresh, slightly tart contrast to the rich chocolate. They also make the plate look prettier without much effort. Chocolate and strawberries already love each other, and the marshmallow center just makes the pairing feel more fun. Like a picnic dessert that accidentally became cozy.
• Whipped Cream: A small spoonful of whipped cream turns these brownie-like cookies into a simple plated dessert. Keep the whipped cream lightly sweetened so it doesn’t compete with the cookie. The soft cream and fudgy cookie texture work beautifully together. It’s easy, but it feels a bit special.
• Peppermint Tea: Peppermint tea is lovely with chocolate, especially when you want something cozy but not too heavy. The mint flavor freshens up the richness of the cookies. This pairing feels especially nice during the holidays, but I’d happily drink it with these cookies any time the weather gets gloomy.
• Caramel Sauce: Drizzle a little caramel sauce over the cookies for a richer dessert. Chocolate, marshmallow, and caramel together are hard to argue with. It turns these easy chocolate cookies into something that feels more like a dessert plate, even if you’re still eating it standing by the counter.
• Dessert Board: Add these cookies to a dessert board with fruit, pretzels, chocolate pieces, graham crackers, mini marshmallows, and candies. They bring a fudgy stuffed-cookie element that makes the board feel cozy and fun. Save one for yourself before you set the board out. I’m not saying hide it. I’m just saying be strategic.
• Ice Cream Sandwiches: Use two cooled cookies to make mini ice cream sandwiches. Vanilla, chocolate, or toasted marshmallow ice cream would be delicious. The cookies are soft, so handle them gently, but this is such a fun way to turn Chocolate Marshmallow Cookies into an even bigger treat. Slightly messy? Probably. Worth it? I think so.

FAQ

Why did my marshmallows leak out?

Marshmallows can leak if they aren’t fully covered with dough before baking. When shaping marshmallow stuffed cookies, make sure the dough is sealed around the marshmallows completely. If a little marshmallow escapes, don’t worry. It may look messy, but it usually tastes delicious. Those chewy, golden marshmallow edges are kind of a bonus, depending on who you ask.

Can I use natural cocoa powder instead of Dutch processed cocoa?

Yes, you can use natural cocoa powder if needed. The cookies may taste a little lighter and slightly sharper, but they’ll still be chocolatey. Dutch processed cocoa gives these brownie-like cookies a deeper, smoother chocolate flavor, so I prefer it when I have it. But if natural cocoa is what’s in the pantry, I’d still make the cookies.

Why are my cookies breaking when I move them?

These cookies are very soft when they first come out of the oven, especially because they have marshmallows inside. Let them cool on the tray for 10 to 15 minutes before moving them. Once they cool, they firm up and become much easier to transfer. I know waiting is hard, but broken warm cookies are a real risk here.

Can I make these cookies without the marshmallow filling?

Yes, you can make the chocolate cookie dough without marshmallows, but they’ll be more like fudgy chocolate cookies instead of true Chocolate Marshmallow Cookies. They’ll still taste rich and chewy, but the gooey marshmallow center is what makes this recipe extra fun. I’d keep the marshmallows if you can.

These Chocolate Marshmallow Cookies are rich, fudgy, chewy, and filled with soft mini marshmallows for the sweetest little surprise. They taste a bit like brownies, a bit like hot cocoa, and a bit like the kind of cookie you make when you need something comforting but don’t want to overcomplicate dessert. And honestly, I love that.

They’re quick, simple, and a little messy in the best way. No fancy mixer. No long chill time. No decorating pressure. Just chocolate dough, marshmallows, a short bake, and the hardest part of all — waiting until they’re cool enough to move. Warm cookies really do test a person.

Try these Chocolate Marshmallow Cookies the next time you want easy chocolate cookies, fudgy brownie-like cookies, or cozy marshmallow stuffed cookies that feel playful without being fussy. And if you make them, please take a moment to rate the recipe — it truly helps me keep creating more sweet recipes for you. Can’t wait to hear what you think!