Looking for an easy and delicious way to transform leftover turkey into a comforting family dinner? This Leftover Turkey and Broccoli Cheesy Casserole is the perfect solution. Tender pieces of turkey, crisp-tender broccoli, creamy sauce, and plenty of melted cheese come together in one bubbling, golden casserole that is cozy, satisfying, and incredibly easy to make.
Whether you have leftover Thanksgiving turkey, Christmas turkey, or simply cooked turkey sitting in the refrigerator, this recipe gives it a delicious second life. It is also an excellent make-ahead meal for busy weeknights.
Why You'll Love This Leftover Turkey Casserole
There are plenty of reasons to keep this turkey casserole recipe in your regular dinner rotation:
Perfect for leftovers: A great way to use leftover roasted or baked turkey.
Easy to make: Simple ingredients and straightforward preparation.
Family-friendly: Creamy, cheesy flavors make broccoli more appealing to picky eaters.
Comforting and filling: Turkey, vegetables, and cheese create a satisfying complete meal.
Make-ahead friendly: Assemble it ahead of time and bake when you're ready.
Great for meal prep: Leftovers reheat beautifully for lunch or dinner.
Customizable: Add rice, pasta, mushrooms, or other vegetables to make it your own.
Ingredients You'll Need
Here's what you need to make this easy leftover turkey and broccoli casserole:
Main Ingredients
3 cups cooked turkey, shredded or cut into bite-size pieces
4 cups broccoli florets
1 small onion, finely diced
2 cloves garlic, minced
2 tablespoons butter or olive oil
1 can (10.5 ounces) cream of chicken soup
1/2 cup sour cream
1/2 cup milk
1 teaspoon Dijon mustard
1/2 teaspoon garlic powder
1/2 teaspoon onion powder
1/2 teaspoon paprika
Salt and freshly ground black pepper, to taste
1 1/2 cups shredded cheddar cheese
1/2 cup shredded mozzarella cheese
Optional Crunchy Topping
For an irresistible golden topping, add:
1/2 cup breadcrumbs or panko
2 tablespoons melted butter
1/4 cup grated Parmesan cheese
How to Make Cheesy Turkey and Broccoli Casserole
Step 1: Preheat the Oven
Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish with cooking spray or butter.
Step 2: Prepare the Broccoli
Bring a pot of water to a boil and lightly steam or blanch the broccoli for about 2–3 minutes.
The broccoli should become bright green and slightly tender but still have some crunch. Drain thoroughly.
Tip: Don't overcook the broccoli at this stage. It will continue cooking in the oven.
Step 3: Sauté the Onion and Garlic
Heat butter or olive oil in a skillet over medium heat. Add the diced onion and cook for about 3–4 minutes, until softened.
Add the minced garlic and cook for another 30 seconds, stirring frequently.
Remove from the heat.
Step 4: Make the Creamy Sauce
In a large mixing bowl, combine:
Cream of chicken soup
Sour cream
Milk
Dijon mustard
Garlic powder
Onion powder
Paprika
Salt
Black pepper
Stir until smooth and creamy.
Step 5: Add the Turkey and Broccoli
Add the cooked turkey, broccoli, sautéed onion and garlic, 1 cup of cheddar cheese, and 1/4 cup of mozzarella.
Gently stir everything together until the turkey and broccoli are evenly coated in the creamy sauce.
Step 6: Transfer to the Baking Dish
Pour the mixture into the prepared casserole dish and spread it evenly.
Sprinkle the remaining cheddar and mozzarella over the top.
Step 7: Add the Crunchy Topping
If you're using the optional topping, combine breadcrumbs, melted butter, and Parmesan cheese in a small bowl.
Sprinkle evenly over the casserole.
Step 8: Bake Until Golden and Bubbly
Bake uncovered for approximately 25–30 minutes, or until the casserole is hot and bubbling around the edges and the cheese has melted into a beautiful golden topping.
For an extra-browned top, place the casserole under the broiler for 1–2 minutes at the end. Watch it carefully so it doesn't burn.
Let the casserole rest for about 5 minutes before serving.
What Kind of Turkey Works Best?
Almost any cooked turkey works beautifully in this recipe.
You can use:
Leftover Thanksgiving turkey
Roasted turkey breast
Turkey thigh meat
Oven-baked turkey
Smoked turkey for a stronger flavor
Store-bought cooked turkey
Both white and dark meat can be used. For the best texture, cut the turkey into small bite-size pieces rather than shredding it too finely.
Can I Use Frozen Broccoli?
Absolutely.
Frozen broccoli is a convenient alternative to fresh broccoli. However, it's best to thaw and drain it thoroughly before adding it to the casserole.
Excess water from frozen broccoli can make the creamy sauce watery.
For the best texture, lightly steam the thawed broccoli and pat it dry with paper towels before mixing it into the casserole.
Delicious Variations
One of the best things about this recipe is how easy it is to customize.
Turkey Broccoli Rice Casserole
Add 2–3 cups of cooked white rice or brown rice to make the casserole even heartier.
Turkey Broccoli Pasta Casserole
Mix in 2–3 cups of cooked pasta such as penne, rotini, or egg noodles.
Add Mushrooms
Sauté sliced mushrooms with the onions and garlic for an earthy flavor.
Make It Spicy
Add crushed red pepper flakes, diced jalapeños, or a little hot sauce to the creamy mixture.
Try Different Cheese
Cheddar is classic, but you can also use:
Monterey Jack
Colby Jack
Gruyère
Pepper Jack
Swiss cheese
Provolone
For the best results, combine two different cheeses for extra flavor and meltiness.
Add More Vegetables
You can easily add other cooked vegetables such as:
Carrots
Peas
Corn
Cauliflower
Spinach
Bell peppers
Tips for the Best Turkey Casserole
Don't Overcook the Turkey
Because the turkey is already cooked, it doesn't need a long baking time. Overbaking can make it dry.
Drain the Broccoli Well
Whether you're using fresh or frozen broccoli, remove as much excess water as possible.
Shred Your Own Cheese
Freshly shredded cheese generally melts more smoothly than many pre-shredded varieties.
Season the Sauce Before Baking
Taste the creamy mixture before adding the turkey and vegetables. Adjust the salt, pepper, garlic, or mustard as needed.
Let It Rest
Allow the casserole to sit for about five minutes after removing it from the oven. This helps the sauce thicken slightly and makes serving easier.
What to Serve With Turkey and Broccoli Casserole
This casserole can easily be served as a complete meal, but a few simple sides can make dinner even better.
Try serving it with:
Garlic bread
Dinner rolls
Simple green salad
Roasted carrots
Steamed green beans
Cranberry sauce
Mashed potatoes
Fresh fruit
A crisp green salad is particularly good because its fresh texture balances the creamy casserole.
How to Store Leftover Casserole
Allow the casserole to cool, then transfer leftovers to an airtight container.
Store in the refrigerator for 3–4 days.
When reheating, use the microwave for individual portions or place the casserole in a covered oven-safe dish and warm it in a 325°F oven until heated through.
If the casserole seems dry after refrigeration, add a small splash of milk before reheating.
Can You Freeze Turkey and Broccoli Casserole?
Yes, this casserole can be frozen.
For best results, assemble the casserole without baking it. Cover it tightly with plastic wrap and aluminum foil, then freeze.
When you're ready to cook it, thaw it overnight in the refrigerator and bake according to the recipe.
If freezing an already baked casserole, allow it to cool completely before wrapping and freezing.
For the best texture, consume frozen casserole within approximately 2–3 months.
Make-Ahead Instructions
This recipe is especially convenient when you're planning dinner ahead of time.
Prepare the casserole according to the recipe, but don't bake it. Cover and refrigerate for up to 24 hours.
When ready to cook, remove it from the refrigerator while the oven preheats.
Bake until hot, bubbly, and golden. You may need to add several extra minutes to the baking time because the casserole starts cold.
Frequently Asked Questions
Can I make this casserole without cream of chicken soup?
Yes. You can replace the canned soup with a homemade white sauce made from butter, flour, milk, and chicken broth.
Can I use rotisserie turkey or chicken?
Definitely. Cooked rotisserie chicken can be substituted for turkey in equal amounts.
How do I prevent the casserole from becoming watery?
The most important step is draining the broccoli well. Also avoid adding too much milk and make sure frozen vegetables are completely thawed and drained.
Can I make this recipe gluten-free?
Yes. Use a gluten-free cream soup and gluten-free breadcrumbs, or simply omit the breadcrumb topping.
Can I make it without broccoli?
Of course. Try cauliflower, green beans, peas, spinach, or a combination of your favorite vegetables.
Easy Leftover Turkey Casserole Recipe
Ingredients
3 cups cooked turkey
4 cups broccoli florets
1 small onion
2 cloves garlic
2 tablespoons butter or olive oil
10.5 ounces cream of chicken soup
1/2 cup sour cream
1/2 cup milk
1 teaspoon Dijon mustard
1/2 teaspoon garlic powder
1/2 teaspoon onion powder
1/2 teaspoon paprika
Salt and black pepper
1 1/2 cups shredded cheddar cheese
1/2 cup shredded mozzarella cheese
1/2 cup panko breadcrumbs, optional
2 tablespoons melted butter, optional
1/4 cup Parmesan cheese, optional
Instructions
Preheat oven to 375°F (190°C) and grease a 9×13-inch baking dish.
Steam or blanch broccoli for 2–3 minutes, then drain thoroughly.
Sauté onion in butter or oil until softened. Add garlic and cook for 30 seconds.
Combine cream of chicken soup, sour cream, milk, Dijon mustard, seasonings, salt, and pepper in a large bowl.
Stir in turkey, broccoli, onion, garlic, 1 cup cheddar, and 1/4 cup mozzarella.
Transfer the mixture to the prepared baking dish.
Top with the remaining cheese.
If desired, combine panko, melted butter, and Parmesan and sprinkle over the top.
Bake uncovered for 25–30 minutes, until hot and bubbling.
Let rest for 5 minutes before serving.
Final Thoughts
This cheesy leftover turkey and broccoli casserole is proof that leftovers don't have to feel boring. With tender turkey, nutritious broccoli, a rich creamy sauce, and plenty of melted cheese, this easy casserole turns yesterday's dinner into a brand-new comfort food favorite.
It's quick enough for a weeknight, cozy enough for a Sunday dinner, and flexible enough to customize with whatever ingredients you have available.
The next time you find yourself wondering what to do with leftover turkey, skip the sandwiches and make this irresistible casserole instead!
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