Give your holiday leftovers new life with this Turkey Stuffing Casserole. It’s layered with creamy mashed potatoes and melted cheese for a flavorful twist.
Preheat the oven to 350°F. Lightly spray a 9x13-inch baking dish with nonstick spray.
Mix the filling
In a large bowl, combine the turkey, stuffing, cream of mushroom soup, mixed vegetables, milk, parsley, garlic powder, onion powder, salt, and pepper. Stir until evenly combined.
Assemble the casserole
Spread the mixture evenly in the prepared baking dish. Top with mashed potatoes, spreading into a smooth, even layer. Sprinkle cheddar cheese on top, if using.
Bake
Cover loosely with foil and bake for 20–25 minutes, or until heated through and the cheese is melted.
Serve
Remove from the oven and let rest for 5 minutes before serving.
Notes
Storage, Freezing, and Make-Ahead Tips
Storage: Keep leftovers in the refrigerator, covered, for up to 3 days.
Freezing: Assemble, cover tightly with foil and plastic wrap, and freeze for up to 3 months.
Thawing: Thaw overnight in the refrigerator before baking.
Reheating: Warm individual portions in the microwave or reheat the whole casserole in the oven at 325°F until hot.
Make-Ahead: Assemble the casserole a day ahead, refrigerate, and bake just before serving.