One-Pan Meatball Casserole with Cheesy Tomato Sauce

Quick and easy meatball casserole you can make at home with simple ingredients in one oven-safe dish in about 30 minutes. This hearty bake is loaded with meatballs, marinara sauce and melted cheese—essentially a one-pan meatball parmesan. Serve it on its own, over pasta or tucked into a meatball sub.

If you enjoyed the Best Spaghetti and Meatballs (One Pot) recipe, you’ll love this casserole. It’s straightforward to prepare and kid-friendly, so little helpers can join in the kitchen.

How to make meatball casserole?

1. Spread marinara sauce in an oven-safe dish.
2. Add meatballs—use fully cooked meatballs.
3. Sprinkle cheese until the top is covered with mozzarella and parmesan.
4. Bake until the cheese is melted and bubbly.
5. Enjoy! Garnish with fresh basil and serve.

What sides to serve with cheesy meatball casserole recipe?

Pasta is a classic pairing. Any shape works—simple boiled pasta or lightly buttered noodles both complement the casserole. For a lower-carb option, serve with zucchini noodles (zoodles) or spaghetti squash.

Bread is another great choice: crusty bread, breadsticks, dinner rolls or garlic bread all soak up the sauce nicely.

Vegetables add color and balance. Roasted vegetables, broccoli or asparagus make excellent sides.

Salad keeps the meal lighter—try a crisp cucumber and onion salad, an Italian chopped salad, or a three-bean salad for a refreshing contrast.

Variations

Add pasta—Layer boiled pasta in the dish, then add sauce, meatballs and cheese for a heartier casserole.

Meatball sliders—Fill small buns with meatballs, sauce and cheese, then bake until the cheese melts. Perfect for potlucks and parties.

Meatball sandwich / meatball sub—Fill sub rolls with meatballs, sauce and cheese, then bake until the cheese is melted and golden.

Bite-sized appetizer—Serve meatballs on toothpicks with sauce for an easy party appetizer.

Try a different sauce—Swap marinara for arrabbiata, cheddar cheese sauce, chimichurri, basil pesto or alfredo for a new flavor profile.

Use other cheeses—Mozzarella and parmesan are classic, but blue cheese, goat cheese, Monterey Jack, feta, havarti, gouda or any favorite melting cheese can be used.

Tips and Techniques

Don’t skip fresh basil—even a few leaves add bright aroma and flavor.

Homemade vs. store-bought meatballs—both work well. Precooked meatballs save time on busy weeknights.

Use fully cooked meatballs for convenience and consistent results.

Serve a crowd by doubling or tripling the ingredients and using a larger baking dish.

Timing with pasta—while the casserole bakes, boil pasta on the stove so both are ready together.

Storage

Refrigerate leftovers in a sealed container for up to 2 days.

Freeze an unbaked assembled casserole: tightly wrap the dish and freeze for up to 1 month. When ready, bake from frozen or thaw overnight and then bake.

Reheat leftovers in the microwave or oven until warmed through.

More One Pot Meatball Recipes

• Cocktail Meatballs (One Pot)
• Instant Pot Grape Jelly Meatballs
• Italian Meatball Soup (One Pot)

Recipe