If dinner needs to basically cook itself tonight, this Dump and Bake Meatball Casserole is your new best friend. Just toss everything in the pan — frozen meatballs, pasta, sauce, cheese — and let the oven do the heavy lifting. It comes out bubbly, cheesy, and totally comforting… with almost zero effort and barely any dishes. Perfect for those busy nights when you need something hearty that the whole family will actually eat.
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Below you will find tips, tricks and helpful hints for making this recipe including step by step instructions with pictures. If you would like to go directly to the recipe, scroll down to the recipe card or tap "Jump to Recipe" at the top of the page.
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Why You'll Love This Recipe
You’re going to love this Dump and Bake Meatball Casserole because it’s the ultimate low-effort, high-reward dinner. There’s no boiling pasta, no pre-cooking, and barely any prep — you literally dump everything in one dish and let the oven handle it.
It comes out cheesy, saucy, and packed with cozy comfort-food vibes that make everyone go back for seconds.
It’s perfect for busy weeknights, picky eaters, or those days when you just don’t feel like cooking but still want something hearty and homemade. Minimal dishes, simple ingredients, and big flavor? That’s a win all around!
Ingredients
*Ingredient amounts are located in the recipe card at the end of this post.
- Marinara Sauce (1 jar) – The rich, tomato-based base of the casserole that brings all the flavor. Use your favorite brand for the best taste since it really shines in this recipe.
- Water – Mixed with the marinara sauce, this helps cook the pasta right in the baking dish so there’s no need to boil it separately.
- Frozen Meatballs – The hearty, protein-packed star of the dish. No need to thaw — they cook perfectly in the oven while soaking up all that saucy goodness.
- Uncooked Pasta (Rotini or Penne) – These sturdy pasta shapes hold onto the sauce beautifully and cook right in the casserole, making this truly a dump-and-bake meal.
- Shredded Mozzarella Cheese – Melts into that gooey, bubbly top layer everyone loves. It adds creaminess and that classic cheesy pull.
- Shredded Parmesan Cheese – Brings a salty, slightly nutty flavor that boosts the overall richness of the casserole.
- Italian Seasoning – A blend of herbs like oregano, basil, and thyme that adds classic Italian-inspired flavor throughout the dish.
- Garlic Powder – A simple way to deepen the savory flavor and give the casserole that warm, comforting taste without extra prep.
How to Make Dump and Go Meatball Casserole
[Step 1] Spray a 9x13 baking dish nonstick cooking spray. Add the jar of marinara sauce, 3 cups of water, ½ teaspoon of Italian Seasoning and ¼ teaspoon of garlic powder to the dish and stir to mix.
[Step 2] Add the box of uncooked pasta and the bag of frozen meatballs to the sauce and stir to coat the pasta and meatballs evenly with sauce. Cover the dish with aluminum foil and bake at 400 degrees for 35 minutes.
[Step 3] Remove the casserole from the oven and take off the foil. Stir the pasta mixture then top with 1 ½ cups of shredded mozzarella and ½ cup of shredded parmesan cheese.
[Step 4] Bake uncovered for an additional 10-15 minutes, until the cheese has melted. Let the casserole rest for 5 minutes before serving.
How to Store Leftovers
Store any leftover meatball casserole in an airtight container in the refrigerator for up to 4 days.
When you’re ready to reheat, you can warm individual portions in the microwave in 30–60 second intervals until heated through.
If you’re reheating a larger amount, cover it with foil and bake in the oven at 350°F until hot and bubbly. If the pasta has absorbed some of the sauce, just add a splash of water or marinara before reheating to bring it back to that saucy, cheesy goodness.
Meatball Casserole
Ingredients
- 1 Jar Spaghetti Sauce 24 ounces
- 3 Cups Water
- 16 Ounces Frozen Meatballs
- 16 Ounces Pasta uncooked
- 1 ½ Cups Mozzarella shredded
- ½ Cup Parmesan shredded
- 1 Teaspoon Italian Seasoning
- 1 Teaspoon Garlic Powder
- ¼ Teaspoon Red Pepper Flakes optional
Instructions
- Spray a 9x13 baking dish nonstick cooking spray. Add the jar of marinara sauce, 3 cups of water, ½ teaspoon of Italian Seasoning and ¼ teaspoon of garlic powder to the dish and stir to mix.
- Add the box of uncooked pasta and the bag of frozen meatballs to the sauce and stir to coat the pasta and meatballs evenly with sauce. Cover the dish with aluminum foil and bake at 400 degrees for 35 minutes.
- Remove the casserole from the oven and take off the foil. Stir the pasta mixture then top with 1 ½ cups of shredded mozzarella and ½ cup of shredded parmesan cheese.
- Bake uncovered for an additional 10-15 minutes, until the cheese has melted. Let the casserole rest for 5 minutes before serving.
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