Leftover Thanksgiving Turkey Casserole (Easy & Cheesy)

Turn Thanksgiving Leftovers Into the Meal Everyone Fights Over

Every year I roast a big turkey, and every year I end up with a fridge full of leftovers and a family that is suddenly “turkeyed out.” This leftover Thanksgiving turkey casserole is my delicious solution. It takes that cooked turkey, leftover stuffing, and whatever vegetables are hanging around, binds them in a creamy, savory sauce, and bakes everything under a golden, cheesy, crunchy topping. Fifteen minutes of assembly, one dish to wash, and suddenly leftovers feel like a brand-new dinner.

The magic here is transformation. Plain reheated turkey can taste dry and tired by day two, but folded into a creamy casserole with stuffing and a buttery crunch topping, it comes back to life — moist, flavorful, and genuinely craveable. I have made this the Friday after Thanksgiving for years now, and it has quietly become as anticipated as the feast itself. If you have even a few cups of turkey left, you have dinner handled.

Why You’ll Love This Recipe

• Zero-waste hero. Uses up turkey, stuffing, and vegetables in one dish — Thanksgiving leftovers finally disappear happily.
• 15 minutes of prep. If you can stir and pour, you can make this. The oven does the rest.
• One-dish dinner. Protein, starch, and vegetables all bake together — no side dishes required.
• Creamy, cheesy, crunchy. The golden topping over the creamy filling hits every comfort-food note.
• Kid-approved. Even picky eaters who push turkey around on Thursday devour this on Friday.

Ingredients

• 4 cups cooked turkey, cut into bite-size cubes or shredded
• 3 cups leftover stuffing (or 1 box prepared stuffing mix)
• 2 cups frozen mixed vegetables (peas, carrots, corn, green beans), thawed
• 1 (10.5-ounce) can condensed cream of chicken soup
• 1/2 cup sour cream
• 1 cup low-sodium chicken broth
• 1 cup shredded sharp cheddar cheese, divided
• 1 teaspoon poultry seasoning
• 1/2 teaspoon garlic powder
• 1/2 teaspoon kosher salt (adjust to taste)
• 1/4 teaspoon black pepper

For the Crunchy Topping

• 1 cup crushed buttery crackers (Ritz-style) or French-fried onions
• 2 tablespoons unsalted butter, melted

A few notes on key ingredients: Both white and dark turkey meat work — dark meat actually stays moister in the casserole, so use a mix if you have it. If you do not have leftover stuffing, prepare one box of stuffing mix according to package directions and let it cool slightly. Taste before adding salt: between the soup, broth, stuffing, and cheese, this dish can get salty fast, so season conservatively. Full-fat sour cream keeps the sauce rich and stable; light sour cream can turn thin and watery in the oven.

How to Make Leftover Thanksgiving Turkey Casserole

1. Preheat and prep the dish. Preheat the oven to 375°F. Lightly grease a 9×13-inch baking dish with butter or cooking spray. This size gives the casserole the right depth to heat through evenly without drying out.
2. Mix the creamy base. In a large mixing bowl, whisk together the condensed cream of chicken soup, sour cream, and chicken broth until smooth. Stir in the poultry seasoning, garlic powder, salt, and pepper. This sauce is what keeps every bite moist.
3. Fold in the turkey and vegetables. Add the cubed turkey and thawed mixed vegetables to the sauce and stir gently until everything is evenly coated. The mixture should look generously saucy — it thickens as it bakes.
4. Layer in the stuffing. Spread half of the stuffing evenly over the bottom of the prepared baking dish and press it down lightly to form a base layer. Spoon the turkey mixture over the stuffing, then scatter the remaining stuffing over the top. This layering gives you distinct textures instead of one uniform mush.
5. Add the cheese. Sprinkle 3/4 cup of the shredded cheddar evenly over the top of the casserole. The cheese melts into the stuffing layer and creates a savory, golden crust under the crunchy topping.
6. Make the topping. Toss the crushed crackers or French-fried onions with the melted butter in a small bowl until evenly coated. Scatter this mixture over the cheese layer. The butter helps the topping brown deeply and turn irresistibly crisp.
7. Bake until bubbly. Bake uncovered at 375°F for 30 to 35 minutes, until the topping is deep golden brown and the edges are bubbling vigorously. If the top browns too quickly, tent loosely with foil for the last 10 minutes.
8. Check the temperature. For food safety, the center of the casserole should reach 165°F on an instant-read thermometer, per USDA guidance for reheated leftovers. Insert the thermometer into the thickest part without touching the dish.
9. Rest before serving. Let the casserole rest for 10 minutes after baking. This lets the sauce thicken slightly so it scoops in neat portions instead of running across the plate.
10. Serve and enjoy. Scoop generous portions onto plates and finish with the remaining 1/4 cup of cheddar sprinkled over the hot servings so it melts on contact. A simple green salad or cranberry sauce on the side completes the plate.

Pro Tips for the Best Results

• Use a mix of white and dark meat. Dark turkey meat has more fat and stays juicy through a second round of cooking, while white meat adds that classic Thanksgiving flavor.
• Do not over-salt. Canned soup, broth, stuffing, and cheese all bring salt. Mix everything, taste the sauce, and only then decide if it needs the full 1/2 teaspoon.
• Thaw frozen vegetables first. Adding them frozen dumps water into the casserole and makes the sauce thin. A quick rinse under warm water and a good drain is all it takes.
• Assemble ahead. Build the whole casserole (without the topping) up to 24 hours ahead, cover, and refrigerate. Add the buttery topping just before baking and add 5 to 10 minutes to the bake time.
• Revive dry turkey. If your leftover turkey is on the dry side, let it sit in the sauce mixture for 15 minutes before assembling — it will soak up moisture like a sponge.
• Crisp the topping under the broiler. For an extra-crunchy finish, broil the baked casserole for 1 to 2 minutes at the end, watching constantly so it does not burn.

Variations

• Turkey Pot Pie Style. Skip the stuffing layers and pour the turkey mixture into the dish, then top with a sheet of refrigerated pie crust (vented) instead of the cracker topping. Bake at 400°F for 30 minutes until the crust is golden.
• Southwestern. Swap the cream of chicken soup for cream of mushroom, add a 4-ounce can of diced green chiles and 1 teaspoon of cumin, and top with pepper jack cheese and crushed tortilla chips.
• Low-Carb. Replace the stuffing layers with 4 cups of riced cauliflower (squeezed dry) and use crushed pork rinds mixed with Parmesan for the topping. Still creamy, still satisfying.
• Ham it up. No turkey left? This works beautifully with leftover holiday ham, cubed rotisserie chicken, or even shredded pork — the method is endlessly adaptable to whatever the fridge holds.

Storage & Reheating

Refrigerate leftovers in an airtight container for up to 3 to 4 days. Reheat individual portions in the microwave, or warm the whole dish covered with foil in a 350°F oven for 20 to 25 minutes until the center reaches 165°F. To freeze, cool the baked casserole completely, wrap tightly in plastic wrap and foil, and freeze up to 3 months; thaw overnight in the refrigerator before reheating. The cracker topping loses some crunch after freezing — sprinkle on a fresh handful of buttered crumbs before reheating for best results.

Frequently Asked Questions

How long after Thanksgiving is the turkey still good for this leftover Thanksgiving turkey casserole?

Follow USDA guidelines: cooked turkey is safe for 3 to 4 days in the refrigerator. That makes Friday or Saturday the perfect casserole day after a Thursday feast. If you will not get to it in time, freeze the cubed turkey right away — it keeps for 3 months and thaws overnight in the fridge.

Can I use fresh turkey instead of leftovers?

Yes. Poach 1 1/2 pounds of boneless, skinless turkey breast or thighs in simmering salted water for 20 to 25 minutes until cooked through, then cube. You can also use a rotisserie chicken from the store — the recipe is flexible by design.

My casserole came out watery. What went wrong?

The most common cause is unthawed frozen vegetables releasing water, or watery stuffing. Thaw and drain vegetables well, and if your stuffing seems very moist, use a little less broth. Letting the casserole rest 10 minutes after baking also lets the sauce set up considerably.

Can I make this in a slow cooker?

You can. Layer everything except the topping in a greased slow cooker and cook on LOW for 3 to 4 hours until hot and bubbly (165°F in the center). Add the buttery cracker topping during the last 30 minutes with the lid slightly ajar so it crisps instead of steaming.

What sides go with turkey casserole?

Honestly, it is a complete meal on its own. If you want sides, keep them simple and fresh to contrast the richness: a crisp green salad with vinaigrette, steamed green beans, or leftover cranberry sauce for that sweet-tart pop. Warm dinner rolls never hurt either.

This leftover Thanksgiving turkey casserole turns the day-after fridge cleanout into a dinner worth looking forward to — creamy, cheesy, golden, and gone in minutes. Make it the Friday after Thanksgiving and start a new tradition. Still in holiday mode? Start your next gathering with our cranberry jalapeño cream cheese dip, or plan Christmas morning around our overnight Christmas breakfast casserole. For more cozy ideas, browse our easy weeknight dinner ideas.