Leftover stuffing, mashed potatoes, turkey, cranberry sauce, gravy, milk, and chicken broth.

I don’t know about you, but the day after Thanksgiving always feels like the fridge is playing a game with me. There’s mashed potatoes in one corner, turkey wrapped in foil, cranberry sauce in a tiny container that somehow keeps tipping over, and stuffing packed into the kind of bowl that absolutely does not match the lid. Every year, same thing. I open the fridge, stare at everything, and think, okay… now what? That’s exactly where this Thanksgiving Leftover Casserole Recipe comes in.

I love Thanksgiving leftovers, but I’ll admit it: after one reheated plate, I’m ready for something that feels a little different. Not fancy. Not “let’s start a whole new cooking project” different. Just different enough that dinner doesn’t feel like yesterday’s plate wearing the same outfit. This casserole takes all those cozy leftovers — turkey, cranberry sauce, mashed potatoes, gravy, and stuffing — and layers them into one warm baking dish. It’s simple, but it works.

The first time I made a Thanksgiving leftover casserole like this, I was tired in that very specific after-holiday way. You know the feeling, right? The big meal is over, the kitchen has survived, and somehow there are still crumbs on the counter even though you swear you wiped it three times. I didn’t want to cook from scratch. I also didn’t want another turkey sandwich. So I layered everything together, poured a little broth over the stuffing so it wouldn’t dry out, and hoped the oven would do something magical. And honestly? It kind of did.

What I love about this Thanksgiving Leftover Casserole Recipe is that it makes leftovers feel planned, even if they absolutely were not. The cranberry sauce keeps the turkey moist and adds that sweet-tart flavor, the mashed potatoes make everything creamy, the gravy ties it together, and the stuffing on top brings all that herby holiday flavor back. It’s like Thanksgiving dinner got tucked into a cozy blanket and baked until warm. A little messy on the plate? Maybe. But good messy. The kind you go back for.

Why you’ll Love this Thanksgiving Leftover Casserole Recipe?

The best thing about this Thanksgiving Leftover Casserole Recipe is that it gives you the perfect Thanksgiving bite without having to rebuild the whole plate. You know that forkful where you try to get turkey, potatoes, stuffing, gravy, and just enough cranberry sauce all together? This casserole does that for you. Every scoop has a little sweet, savory, creamy, and herby flavor, which is basically the whole point of Thanksgiving leftovers anyway.

Another thing I really like is how practical it is. Leftover turkey can get dry when you reheat it by itself, and nobody wants to sit there chewing through sad turkey like it’s a chore. Mixing the turkey with cranberry sauce helps keep it moist and gives it flavor. Then the mashed potatoes create a soft, creamy layer, the gravy adds richness, and the stuffing bakes on top with just enough broth to keep it tender. It turns the leftovers into something that feels fresh again, or at least fresh-ish in the best possible way.

This Thanksgiving Leftover Casserole Recipe is also a relief because it doesn’t ask much from you. And after Thanksgiving, that matters. You already did the chopping, roasting, mashing, stirring, baking, and probably answering twenty questions about when dinner would be ready. Now all you have to do is layer, pour, bake, and serve. That’s my kind of post-holiday cooking. Low effort, high comfort.

And honestly, casseroles are made for this kind of meal. This one feeds about 8 people, reheats well, and works for lunch, dinner, or that strange late-afternoon moment when you’re “not hungry” but somehow standing in front of the fridge with a fork. It’s cozy, forgiving, and not the least bit precious. You scoop it. You eat it. You feel a little better. That’s the charm.

Ingredient Notes

Before you start layering this Thanksgiving Leftover Casserole Recipe, let’s talk about the ingredients. The best part is that almost everything is already cooked, which means you’re not starting from zero. You’re just giving those leftovers a little makeover. The stuffing adds texture and all those holiday herbs, the mashed potatoes bring creaminess, the turkey makes it hearty, the cranberry sauce adds brightness, the gravy makes it cozy, and the broth keeps the stuffing from turning dry on top.

• Leftover stuffing: Stuffing becomes the top layer of this casserole, and it brings that cozy Thanksgiving flavor right away. It has herbs, bread, seasoning, and usually a little buttery goodness already built in. Since stuffing can dry out when reheated, the chicken broth helps bring it back to life. If your stuffing is already very moist, use a lighter hand with the broth. If it’s dry and crumbly, give it a little extra help. Stuffing is dramatic like that.
• Leftover mashed potatoes: Mashed potatoes make the creamy middle layer, and they help hold everything together. If they’re cold from the fridge, they may be a little stiff and stubborn. I usually warm them slightly or stir in a splash of milk before spreading. It makes the job so much easier. Cold mashed potatoes can fight back, and frankly, after Thanksgiving, I’m not fighting potatoes.
• Leftover turkey: Turkey is the main protein here, and cutting it into small pieces makes the casserole easier to scoop and eat. White meat, dark meat, or a mix of both will work. If the turkey is a little dry, don’t panic. The cranberry sauce and gravy help soften it up and add flavor. This casserole is very forgiving, which is exactly what leftovers need.
• Cranberry sauce: Cranberry sauce adds sweetness, tang, and moisture. It brightens the turkey layer and gives the casserole that classic sweet-savory Thanksgiving flavor. Whole berry sauce works beautifully, but jellied cranberry sauce is fine too. Use what you have. This is not the time to be fussy.
• Gravy: Gravy is what pulls the casserole together. It adds richness and helps the mashed potatoes stay creamy. Mixing it with milk makes it easier to pour and spread over the potatoes. Turkey gravy is ideal, but chicken gravy works too. If you’re short on gravy, stretch it with a little broth. We improvise. We survive.
• Milk: Milk loosens the gravy so it doesn’t just sit in one thick puddle. It helps the gravy flow over the mashed potatoes and keeps the casserole from feeling too dense. Whole milk gives a richer feel, but 2% works fine.
• Chicken broth: Chicken broth keeps the stuffing moist while the casserole bakes. Turkey broth works too if you have it. This little splash of broth matters more than it seems because stuffing can go from cozy to dry pretty quickly in the oven. Nobody wants crunchy-in-a-bad-way stuffing.

How to Make Thanksgiving Leftover Casserole Recipe?

This Thanksgiving Leftover Casserole Recipe is all about easy layering. You start with turkey and cranberry sauce, add mashed potatoes, pour on the gravy, top with stuffing, and finish with a little broth. It’s almost like a Thanksgiving lasagna, except there are no noodles and nobody is pretending this is elegant. It’s comfort food. It’s supposed to be cozy, warm, and scoopable.

Step 1: Preheat the Oven

Preheat your oven to 400°F.

Since all the ingredients are already cooked, you’re really just heating everything through and helping the layers come together. A hot oven also helps the stuffing warm nicely on top. Nothing complicated here. Just getting the oven ready to do its job.

Step 2: Layer the Turkey and Cranberry Sauce

Place the chopped leftover turkey in the bottom of a large baking dish. Add the cranberry sauce and mix until the turkey is evenly coated. Spread the mixture into an even layer.

This is the base of the casserole, and it’s where the sweet-savory flavor starts. The cranberry sauce helps keep the turkey moist while adding that familiar holiday tang. Try to spread it evenly so every scoop gets some turkey. Nobody wants the lonely corner with only potatoes and no turkey.

Step 3: Add the Mashed Potatoes

Spread the mashed potatoes over the cranberry turkey layer. Smooth them gently into the sides and corners of the dish.

Think of the mashed potatoes as the creamy blanket layer. If they’re too stiff to spread, warm them just a little or stir in a small splash of milk. Don’t rush it too much. A fairly even potato layer helps the gravy settle nicely on top and makes the casserole easier to serve later.

Step 4: Prepare and Pour the Gravy

In a medium bowl, whisk the milk into the gravy until smooth. Pour the gravy mixture evenly over the mashed potatoes.

The milk loosens the gravy and makes it easier to pour across the potatoes. As the casserole bakes, the gravy warms and seeps into the potato layer a little, which makes everything taste more connected. It’s a small step, but it helps the casserole feel like one dish instead of separate leftovers stacked together.

Step 5: Add the Stuffing

Top the mashed potatoes and gravy with the leftover stuffing. Spread it gently into an even layer.

Try not to pack the stuffing down too firmly. Keeping it a little loose helps it heat evenly and gives the top a better texture. The stuffing brings that cozy, herby Thanksgiving flavor, so let it sit proudly on top.

Step 6: Add the Chicken Broth

Pour the chicken broth evenly over the stuffing.

This keeps the stuffing from drying out in the oven. If your stuffing is already very soft, you can use a little less broth. If it’s dry, the broth is your best friend. This is one of those “use your eyes and trust yourself” steps. Leftovers are not always exact, and that’s okay.

Step 7: Bake Uncovered

Place the baking dish in the oven and bake for 25 minutes.

During this first bake, the casserole starts heating through and the stuffing begins to warm on top. Your kitchen may start smelling like Thanksgiving all over again, which can be either comforting or slightly dangerous if everyone starts drifting in asking when it’s ready.

Step 8: Cover and Finish Baking

After 25 minutes, cover the baking dish with aluminum foil and bake for another 15 minutes.

The foil traps heat and moisture, helping the casserole finish warming without drying out the stuffing. Once it’s done, the whole dish should be hot and cozy, with the layers warmed all the way through.

Step 9: Serve Hot

Remove the casserole from the oven and let it rest for a few minutes before serving.

That short rest helps the layers settle a little, so scooping is easier. Serve it hot and enjoy all those Thanksgiving flavors in one dish. It may not come out in perfect squares, and honestly, who cares? It tastes like comfort.

Storage Options

This Thanksgiving Leftover Casserole Recipe stores well, but because it’s made with leftovers, timing matters. Once the casserole cools, transfer it to an airtight container or cover the baking dish tightly. Store it in the refrigerator for up to 3 days, depending on how long the original leftovers were already stored before you made the casserole.

To reheat, warm individual portions in the microwave until hot throughout. For a larger portion, cover the baking dish with foil and reheat in a 325°F oven until warmed through. If the stuffing or potatoes seem a little dry, add a splash of broth or gravy before reheating. It’s a small thing, but it helps bring back that soft, cozy texture.

You can freeze this casserole, though the texture may change slightly after thawing. Mashed potatoes and stuffing can become softer, but the flavor will still be comforting. Freeze tightly wrapped portions for up to 2 months. Thaw overnight in the refrigerator, then reheat covered until hot. It may not be quite the same as fresh, but it’s still a very nice future dinner.

Variations & Substitutions

One of the nicest things about this Thanksgiving Leftover Casserole Recipe is that it’s flexible. Leftovers look different in every house. Some people have tons of stuffing and barely any gravy. Some have sweet potatoes instead of mashed potatoes. Some have turkey, some have chicken, some have that one mystery container nobody wants to claim. This recipe can handle a little adjusting.

• Use chicken instead of turkey: Cooked chicken works well if you don’t have turkey. Rotisserie chicken, roasted chicken, or shredded chicken all pair nicely with stuffing, potatoes, gravy, and cranberry sauce.
• Use sweet potatoes: Leftover mashed sweet potatoes can replace regular mashed potatoes for a sweeter casserole. They work especially well with cranberry sauce and turkey, though the whole dish will taste a little more sweet and holiday-ish.
• Add green bean casserole: Leftover green bean casserole can be layered between the turkey and mashed potatoes or served alongside. It adds vegetables and creamy flavor, and it’s a great way to use up another container from the fridge.
• Make it cheesier: Add shredded cheddar, mozzarella, or Gruyere over the mashed potatoes before adding the stuffing. Is cheese required? No. Is cheese often welcome? Absolutely. I’m not here to stop anyone.
• Use turkey gravy: Turkey gravy is the most natural choice, but chicken gravy works too. If you don’t have enough gravy, stretch it with a little broth or milk.
• Add corn or peas: Leftover corn, peas, or mixed vegetables can go into the turkey layer. It adds color and helps use up those tiny leftover bowls that always seem to hang around.
• Serve extra cranberry sauce on the side: If you love that sweet-tart flavor, add more cranberry sauce when serving. It brightens the casserole and makes the rich layers feel more balanced.

What to Serve With Thanksgiving Leftover Casserole Recipe?

This Thanksgiving Leftover Casserole Recipe is already hearty, so you don’t need a lot on the side. It has turkey, stuffing, mashed potatoes, gravy, and cranberry sauce all in one dish. I like serving it with something fresh, crisp, or tangy to balance the richness. After Thanksgiving, simple is the goal. Nobody needs a second full cooking marathon.

• Green salad: A crisp green salad adds freshness and helps balance the casserole. Lettuce, cucumber, red onion, apples, dried cranberries, and a light vinaigrette would all work beautifully.
• Roasted vegetables: Roasted Brussels sprouts, carrots, broccoli, or green beans make a nice side. They add color and texture without making the meal feel too heavy.
• Dinner rolls: If you still have rolls left, warm them up and serve them on the side. Yes, there are already carbs in the casserole. No, that does not make rolls illegal.
• Extra gravy: Warm extra gravy on the side is always a good idea. Some people like their leftovers saucier, and I respect that completely.
• Extra cranberry sauce: Cranberry sauce adds brightness and tang. Serve a spoonful on the side for anyone who likes that sweet-savory contrast.
• Simple slaw: A light cabbage slaw with vinaigrette adds crunch and freshness. It’s especially nice if the casserole feels very rich.
• Pickles or pickled onions: This might sound odd, but something tangy can be really good with rich Thanksgiving leftovers. Pickles or pickled onions wake up the plate a bit. Weird? Maybe. Good? Also maybe.

FAQ

Can I use chicken instead of turkey?

Yes, cooked chicken works well in this recipe. It gives you the same cozy casserole feel and pairs nicely with stuffing, mashed potatoes, gravy, and cranberry sauce.

How do I keep the stuffing from drying out?

Pouring chicken broth over the stuffing helps keep it moist while baking. Covering the casserole with foil during the last part of baking also traps moisture and prevents the top from getting too dry.

Can I add vegetables to this casserole?

Yes, leftover corn, peas, green beans, carrots, or green bean casserole can be added. Add them to the turkey layer or between the turkey and mashed potatoes.

Can I make this without cranberry sauce?

Yes, you can leave out the cranberry sauce if you prefer. The casserole will be more savory. Replace it with extra gravy, a little broth, or serve cranberry sauce on the side instead.

This Thanksgiving Leftover Casserole Recipe is cozy, practical, and honestly one of my favorite ways to make holiday leftovers feel exciting again. It takes turkey, cranberry sauce, mashed potatoes, gravy, stuffing, milk, and broth and turns them into one warm, comforting baking dish.

I love that it saves those little fridge containers from being forgotten. It gives you one more good meal without starting from scratch, and after a big holiday feast, that feels like a win. A slightly messy, very delicious win.

So tell me — would you add extra gravy, extra cranberry sauce, a cheesy layer, or maybe something totally unexpected to this Thanksgiving Leftover Casserole Recipe? I’d love to know how you’d make your leftovers feel new again.