Cheesy Baked Meatball Casserole
This Cheesy Baked Meatball Casserole is an easy, comforting dinner loaded with juicy meatballs, rich tomato sauce, melted mozzarella, and plenty of delicious Italian-style flavor. Everything is baked together until hot and bubbly, creating a satisfying meal that the whole family will love. Serve it with garlic bread, pasta, rice, or a fresh salad.
Ingredients
For the Meatballs
- 1½ lbs (680 g) ground beef
- ½ cup breadcrumbs
- 1 large egg
- ¼ cup milk
- ½ cup grated Parmesan cheese
- 2 cloves garlic, minced
- 2 tablespoons chopped fresh parsley
- 1 teaspoon Italian seasoning
- 1 teaspoon salt
- ½ teaspoon black pepper
- ½ teaspoon onion powder
- ½ teaspoon paprika
For the Casserole
- 2 cups marinara or tomato pasta sauce
- 1 can (14 oz / 400 g) crushed tomatoes
- 1 tablespoon tomato paste
- ½ teaspoon dried oregano
- ½ teaspoon Italian seasoning
- ½ teaspoon garlic powder
- ¼ teaspoon red pepper flakes, optional
- 2 cups shredded mozzarella cheese
- ½ cup grated Parmesan cheese
- 1 tablespoon chopped fresh parsley, for garnish
Directions
1. Preheat the Oven
Preheat your oven to 400°F (200°C).
Lightly grease a 9 × 13-inch baking dish.
2. Prepare the Meatball Mixture
In a large bowl, combine the ground beef, breadcrumbs, egg, milk, Parmesan cheese, minced garlic, parsley, Italian seasoning, salt, black pepper, onion powder, and paprika.
Mix gently until just combined.
Avoid overmixing because this can make the meatballs dense and tough.
3. Shape the Meatballs
Roll the mixture into approximately 18–20 medium-sized meatballs.
Place them on a plate or baking sheet.
Try to keep the meatballs similar in size so they cook evenly.
4. Make the Tomato Sauce
In a bowl, combine the marinara sauce, crushed tomatoes, tomato paste, oregano, Italian seasoning, garlic powder, and optional red pepper flakes.
Stir until smooth and well combined.
5. Assemble the Casserole
Spread about 1 cup of the tomato sauce across the bottom of the prepared baking dish.
Arrange the uncooked meatballs evenly over the sauce.
Pour the remaining sauce over and around the meatballs.
Cover the baking dish tightly with aluminum foil.
6. Bake the Meatballs
Bake for 25–30 minutes.
Carefully remove the foil.
The meatballs should be nearly cooked through and the sauce should be bubbling around the edges.
7. Add the Cheese
Sprinkle the shredded mozzarella evenly over the meatballs and sauce.
Top with grated Parmesan cheese.
Return the casserole to the oven uncovered.
8. Bake Until Golden and Bubbly
Bake for another 10–15 minutes, until the cheese has melted completely and becomes lightly golden and bubbly.
For a more golden top, place the casserole under the broiler for 1–2 minutes, watching carefully.
9. Rest and Serve
Remove the casserole from the oven and let it rest for approximately 5–10 minutes.
Sprinkle with fresh parsley.
Serve hot with your favorite side dishes.
Tips for the Best Meatball Casserole
Don’t overmix the meat: Mix only until the ingredients are combined for tender meatballs.
Use a good-quality sauce: Since the sauce is a major part of the dish, choose one you enjoy.
Cover during the first bake: This helps the meatballs cook gently and keeps the casserole moist.
Check doneness: Ground beef meatballs should be cooked to a safe internal temperature of 160°F (71°C).
Let it rest: Allowing the casserole to rest helps the sauce settle and makes serving easier.
Easy Variations
Pasta Meatball Casserole
Add 3–4 cups cooked pasta to the sauce before assembling.
Penne, rigatoni, or ziti work especially well.
Cheesy Garlic Meatball Casserole
Add an extra clove of garlic and increase the mozzarella to 2½ cups.
Spicy Meatball Casserole
Add extra red pepper flakes, diced jalapeños, or spicy Italian seasoning.
Creamy Meatball Casserole
Stir ½ cup heavy cream into the sauce before adding it to the baking dish.
Chicken Meatball Casserole
Replace the beef with ground chicken or turkey and cook until the meatballs reach 165°F (74°C).
Vegetable-Packed Version
Add sautéed mushrooms, spinach, bell peppers, or zucchini to the sauce.
Make-Ahead Instructions
You can assemble the casserole ahead of time.
Prepare the meatballs and sauce, assemble everything in the baking dish, cover, and refrigerate for up to 24 hours.
When ready to bake, allow the dish to sit at room temperature for about 15–20 minutes while the oven preheats.
Bake as directed, adding a few extra minutes if needed.
Storage
Allow leftovers to cool before placing them in an airtight container.
Refrigerate for up to 3–4 days.
Reheat individual portions in the microwave or warm the casserole in the oven until heated through.
Freezing Instructions
For best results, freeze the assembled casserole before adding the cheese topping.
Cover tightly and freeze for up to 2 months.
Thaw overnight in the refrigerator.
Bake as directed, then add the cheese during the final portion of baking.
What to Serve With It
This casserole pairs perfectly with:
- Garlic bread
- Spaghetti
- Buttered noodles
- Mashed potatoes
- Rice
- Caesar salad
- Roasted vegetables
- Steamed green beans
Frequently Asked Questions
Can I use frozen meatballs?
Yes. Fully cooked frozen meatballs make this recipe even easier. Add them directly to the baking dish with the sauce and bake until heated through, following the package instructions as needed.
Can I use store-bought marinara sauce?
Absolutely. Store-bought marinara is a convenient option and works perfectly.
Can I make this without Parmesan cheese?
Yes. You can use extra mozzarella or another hard, flavorful cheese.
Why are my meatballs dry?
Overmixing the meat or overbaking can make them dry. Use a gentle hand when mixing and check the internal temperature to avoid overcooking.
Recipe at a Glance
Prep Time: 20 minutes
Cook Time: 40–45 minutes
Total Time: About 1 hour
Servings: 6
Category: Main Course / Casserole
Cuisine: Italian-American
Method: Oven-Baked
This Cheesy Baked Meatball Casserole is rich, hearty, and loaded with juicy homemade meatballs, flavorful tomato sauce, and gooey melted cheese. It’s an easy family-friendly dinner that delivers classic comfort-food flavor in every bite.