Turkey and Mashed Potatoes Casserole : Easy Thanksgiving Leftovers Recipe

Name: Turkey and Mashed Potatoes Casserole : Easy Thanksgiving Leftovers Recipe
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: American
Ingredients: 3 cups cooked turkey (shredded or cubed); 3 cups mashed potatoes; 2 cups mixed vegetables (peas, carrots, corn, or green beans); 1 cup turkey gravy (plus extra for serving); 1 1/2 cups shredded cheddar or mozzarella cheese; 1 tablespoon butter (for greasing dish); Salt and pepper, to taste

September 21, 2025

BySophia

Dinner

Difficulty

Prep time

Cooking time

Total time

Servings

This Turkey and Mashed Potatoes Casserole is the ultimate way to use up holiday leftovers. With layers of tender turkey, creamy mashed potatoes, vegetables, and melted cheese, it transforms extra Thanksgiving dishes into a hearty, comforting meal. If you’re looking for Thanksgiving leftover turkey recipes, this one is quick, satisfying, and guaranteed to please the whole family.

Why You’ll Love Turkey and Mashed Potatoes Casserole

It’s simple, cozy, and makes the most of your holiday feast without feeling repetitive. Instead of reheating plates of leftovers, this casserole blends them together into a new dish that’s delicious enough to stand on its own. Perfect for busy weeknights after the holiday, it’s one of the best easy turkey casseroles with mashed potatoes.

Who This Recipe Is For

This recipe is perfect for:

Families searching for creative recipes using leftover turkey and mashed potatoes.
Busy cooks wanting a quick, wholesome meal after Thanksgiving.
Anyone who loves comfort food in casserole form.
Holiday hosts who want to repurpose leftovers with minimal effort.

Ingredients You’ll Need

3 cups cooked turkey (shredded or cubed)
3 cups mashed potatoes
2 cups mixed vegetables (peas, carrots, corn, or green beans)
1 cup turkey gravy (plus extra for serving)
1 1/2 cups shredded cheddar or mozzarella cheese
1 tablespoon butter (for greasing dish)
Salt and pepper, to taste

Ingredient Notes and Variations

Turkey: Any cooked turkey works—white or dark meat. Chicken can also be substituted.
Mashed Potatoes: Creamy, buttery mashed potatoes make the best topping.
Vegetables: Use frozen, fresh, or leftover roasted veggies.
Cheese: Cheddar adds sharpness, while mozzarella makes it gooey.
Gravy: Adds flavor and moisture—don’t skip it.

Kitchen Equipment You’ll Need

9×13-inch casserole dish
Mixing bowl
Spoon or spatula
Oven mitts

Step-by-Step Preparation: How to Make Turkey and Mashed Potatoes Casserole

Step 1: Preheat oven to 375°F (190°C). Grease a casserole dish with butter.

Step 2: In a mixing bowl, combine turkey, vegetables, and gravy. Spread evenly into the dish.

Step 3: Spread mashed potatoes evenly over the turkey mixture.

Step 4: Sprinkle shredded cheese on top.

Step 5: Bake uncovered for 25–30 minutes, until heated through and cheese is golden.

Step 6: Serve hot with extra gravy on the side.

Pro Tips for the Best Casserole

Use leftover mashed potatoes that are not too runny.
Add a breadcrumb topping for extra crunch.
Use plenty of gravy to keep it moist.
Let casserole rest for 5 minutes before serving so it holds together.

Common Mistakes to Avoid

Using dry turkey without gravy—this can make the casserole bland.
Overloading with potatoes, which can overwhelm other flavors.
Not preheating the oven, leading to uneven cooking.
Forgetting to cover leftovers before refrigerating—this dries them out.

Serving Suggestions

Serve this casserole with a side salad, roasted Brussels sprouts, or cranberry sauce for a full post-holiday meal. It also pairs beautifully with Vegan Thanksgiving Pot Pie if you’re offering multiple comfort food options.

Creative Presentation Ideas

Bake in mini ramekins for individual servings.
Garnish with fresh parsley for color.
Serve with extra gravy poured tableside for flair.
Top with crispy fried onions for holiday crunch.

Flavor Variations and Add-Ins

Stir in stuffing for an all-in-one leftover casserole.
Add sautéed mushrooms for richness.
Use sweet potatoes instead of white potatoes for a twist.
Sprinkle paprika on top for color and smoky flavor.

How to Store and Reheat

Refrigerate leftovers in an airtight container for up to 3 days. Reheat in the oven at 350°F until warmed through. Freeze unbaked casserole (without cheese topping) for up to 2 months; thaw overnight before baking.

Make-Ahead Tips

Assemble casserole the night before and refrigerate until ready to bake.
Freeze in smaller portions for quick weeknight meals.
Prep vegetables and turkey in advance for easier assembly.

Frequently Asked Questions

Can I use chicken instead of turkey?
Yes, rotisserie or leftover chicken works perfectly.

Do I need to heat the turkey first?
No, baking warms everything through.

Can I make this casserole ahead of time?
Yes, assemble in advance and bake when ready.

What can I do if my mashed potatoes are too thin?
Add a little extra cheese or breadcrumbs to thicken the topping.

Can I freeze leftovers?
Yes, portion and freeze for up to 2 months.

Final Thoughts: Why Turkey and Mashed Potatoes Casserole Is a Keeper

This casserole is the ultimate solution for post-holiday meals. It’s hearty, comforting, and one of the best Thanksgiving leftover turkey recipes to reinvent your feast. With simple prep and cozy flavor, it turns leftovers into something new and exciting.

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