Meatball Casserole

Meatball Casserole is the ultimate comfort food—a hearty, oven-baked dish layered with juicy meatballs, creamy mashed potatoes, and melted cheese. This crowd-pleasing recipe blends traditional flavors with the ease of a casserole, making it ideal for weeknight family dinners or potluck gatherings. It delivers satisfying texture and flavor in every forkful, from the rich tomato sauce to the gooey cheese topping.

Why You’ll Love This Recipe

This Meatball Casserole is the perfect solution when you’re craving something warm, cheesy, and filling. It’s an all-in-one meal, combining protein, carbs, and dairy into one easy-to-bake dish. You’ll love how simple it is to prepare—especially if using pre-made or leftover meatballs—and how customizable it is with your choice of seasonings, cheeses, and side additions. Plus, it’s a great dish for feeding a crowd or meal prepping for the week ahead.

Ingredients

(Tip: You can find the complete list of ingredients and their measurements in the recipe card below.)

• Ground beef or store-bought meatballs
• Breadcrumbs
• Egg
• Garlic, minced
• Onion, finely chopped
• Salt
• Black pepper
• Marinara or tomato sauce
• Mashed potatoes (prepared)
• Shredded mozzarella cheese
• Grated Parmesan cheese
• Olive oil
• Fresh parsley (for garnish)

Directions

1. Preheat oven to 375°F (190°C).
2. If making meatballs from scratch, combine ground beef, breadcrumbs, egg, garlic, onion, salt, and pepper in a bowl. Mix thoroughly and form into small balls.
3. Heat a bit of olive oil in a skillet over medium heat and cook meatballs until browned on all sides. Remove and set aside.
4. In a casserole dish, spread a layer of mashed potatoes evenly at the base.
5. Pour half of the marinara sauce over the potatoes.
6. Arrange the cooked meatballs evenly over the sauce.
7. Pour the remaining marinara sauce over the meatballs.
8. Sprinkle generously with mozzarella and Parmesan cheese.
9. Bake in the oven for 20–25 minutes, or until the cheese is melted and bubbly.
10. Remove from oven and garnish with fresh parsley before serving.

Servings and timing

Servings: 6
Prep time: 15 minutes
Cook time: 25 minutes
Total time: 40 minutes

Variations

• Spicy Version: Add crushed red pepper or hot sauce to the marinara.
• Vegetarian Option: Use plant-based meatballs and substitute mashed cauliflower for potatoes.
• Low-Carb: Replace mashed potatoes with a cauliflower mash.
• Cheese Blend: Use a mix of mozzarella, provolone, and cheddar for deeper flavor.
• Add Veggies: Include sautéed mushrooms, bell peppers, or spinach for a more wholesome dish.

Storage/Reheating

Store leftovers in an airtight container in the refrigerator for up to 4 days.
To reheat, place in the oven at 350°F (175°C) until warmed through, or microwave individual portions for 1–2 minutes. For best results, reheat in the oven to preserve the texture of the mashed potatoes and cheese.

FAQs

Can I use frozen meatballs?

Yes, frozen meatballs work well. Just thaw and cook them according to package instructions before assembling the casserole.

Can I use instant mashed potatoes?

Absolutely. Instant mashed potatoes are a convenient option and save prep time.

What sauce is best for this casserole?

A classic marinara or any tomato-based pasta sauce works well. Choose one that’s well-seasoned for the best flavor.

Can I prepare this ahead of time?

Yes. Assemble the casserole up to one day ahead and refrigerate. Bake just before serving.

How do I keep meatballs juicy?

Do not overmix the meat mixture and avoid overcooking the meatballs during browning. Let the sauce and cheese finish the cooking in the oven.

Can I freeze Meatball Casserole?

Yes, you can freeze it after assembly or after baking. If frozen unbaked, thaw before placing in the oven.

What sides go well with this dish?

A light green salad, roasted vegetables, or garlic bread pairs beautifully with the casserole.

Can I make this dairy-free?

Yes, use dairy-free cheese and a dairy-free mashed potato recipe to make it suitable.

Is this recipe gluten-free?

Use gluten-free breadcrumbs and confirm the marinara and cheese are gluten-free.

Can I use other types of cheese?

Certainly. Provolone, cheddar, gouda, or a cheese blend can be used depending on your taste.

Conclusion

Meatball Casserole is a delicious, hearty meal that brings together the best of home-style cooking. With its savory meatballs, rich sauce, and creamy mashed potatoes topped with golden melted cheese, it’s a dish that appeals to both kids and adults. Easy to make, versatile, and satisfying, it’s destined to become a family favorite. Serve it for dinner tonight or prep it ahead for effortless weeknight meals.

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