This easy dump and bake meatball casserole is a hearty dinner made with frozen fully cooked meatballs, uncooked penne, marinara sauce, water, and mozzarella cheese. Simply combine the pasta, sauce, and water in a greased 9 x 13-inch baking dish, arrange the frozen meatballs on top, cover tightly, and bake at 425°F for about 40 minutes before adding the cheese for the final 5 minutes.
The result is tender pasta, juicy meatballs, rich tomato sauce, and a bubbling layer of melted mozzarella in one comforting casserole. With about 10 minutes of prep and approximately 55 minutes from start to finish, this no-boil meatball pasta bake is a practical choice for busy weeknights, family dinners, and casual gatherings.
Jump to RecipeWhy You’ll Love This Recipe
This casserole delivers the cozy flavor of a baked spaghetti dinner with far less preparation. There is no separate pot of boiling water, no skillet for browning meatballs, and no complicated sauce to prepare.
Everything cooks in the same baking dish, which means fewer dishes at the end of dinner. The uncooked penne absorbs the seasoned marinara and water as it bakes, becoming tender while the meatballs warm through above it.
It is also easy to serve to a group because the recipe makes 4 to 6 servings and can go from oven to table in the same dish. For another simple dinner idea, you can also try this easy shrimp recipe when you want a lighter change of pace.
Ingredients You’ll Need
The ingredient list is short, but each item has an important job in the casserole. Use the quantities below as written so the pasta has enough liquid to cook properly.
- 1 pound frozen, fully cooked meatballs: These can be added directly from the freezer, and there is no need to thaw them first.
- One 24-ounce jar marinara or spaghetti sauce: Choose a sauce with a flavor you enjoy because it seasons the entire casserole.
- 1 1/2 cups water: The water combines with the sauce and turns into steam, helping cook the dry pasta.
- 1 pound uncooked penne or another short pasta: Penne works especially well because its ridges and tubes hold onto the sauce.
- 1 cup shredded mozzarella: This creates the soft, creamy, melted topping added at the end.
A 9 x 13-inch baking dish gives the pasta enough room to spread into an even layer. Lightly grease it before adding the ingredients to make serving and cleanup easier.
How to Make It Step-by-Step
Step 1: Heat your oven to 425°F and lightly grease a 9 x 13-inch baking dish. Starting with a properly heated oven helps the covered casserole begin cooking at the right temperature as soon as it goes in.
Step 2: Add the uncooked penne, marinara sauce, and 1 1/2 cups of water directly to the prepared dish. Stir thoroughly so the sauce coats the pasta and the noodles are mostly submerged, since exposed pasta may not soften evenly.
Step 3: Arrange the frozen, fully cooked meatballs evenly over the pasta mixture. Place them in a single layer as much as possible so the heat reaches each meatball and every serving receives a generous portion.
Step 4: Cover the baking dish tightly with aluminum foil. Press the foil securely around the edges because the trapped steam is essential for cooking the dry pasta; a loose cover can leave the noodles undercooked.
Step 5: Bake the covered casserole for about 40 minutes. Check that the pasta is tender and the meatballs are heated through before moving to the finishing step.
Step 6: Carefully remove the foil, watching for hot steam, and sprinkle the 1 cup of shredded mozzarella over the top. Return the dish to the oven uncovered for another 5 minutes, until the cheese is melted and glossy.
Step 7: Remove the casserole from the oven and allow it to rest briefly before serving. This short pause gives the sauce a moment to settle and makes it easier to scoop neat portions without losing the hot, cheesy topping.
Pro Tips for Tender Pasta
The most important detail is the foil seal. Dry pasta depends on the moisture in the sauce and the steam created inside the covered dish, so do not leave gaps around the edges.
Use frozen, fully cooked meatballs directly from the freezer. Thawing is unnecessary and may make them softer or cause them to overcook while the pasta finishes.
Before covering the dish, stir the pasta, sauce, and water well. If a few noodles sit above the liquid, gently press them down so they have a better chance of cooking evenly.
Add the mozzarella only after the pasta has cooked. Putting the cheese on at the beginning can make it overly browned or dry before the pasta is tender.
For a complete comfort-food menu, serve this casserole with a crisp green salad or steamed vegetables. A spoonful of extra marinara at the table can add even more tomato flavor for guests who like a saucier plate.
Serving Ideas and Family Variations
This casserole is satisfying on its own, but simple side dishes make it feel like a full dinner spread. Garlic bread is excellent for catching the remaining sauce, while a fresh salad adds cool crunch beside the warm pasta.
You can finish each serving with a small sprinkle of grated Parmesan, cracked black pepper, or chopped fresh herbs if you have them available. Keep additions modest so the marinara, meatballs, and mozzarella remain the main flavors.
For a potluck-style meal, bring the baked casserole in its dish and serve it while warm. If you are planning a broader comfort-food menu, this green chili corn casserole makes a flavorful side dish for another gathering.
Stick with the stated proportions when preparing this version. A separately published variation uses different pasta and liquid amounts, so those quantities should not be combined with this recipe’s 1 pound of pasta and 1 1/2 cups of water.
Storage and Reheating
Cool leftover casserole promptly, then transfer it to an airtight container or cover the baking dish well before refrigerating. The leftovers are best enjoyed within 3 to 4 days for the best texture and flavor.
Reheat individual portions in the microwave until hot, or warm several servings in a covered oven-safe dish. A small splash of water or marinara can help loosen the pasta if it has absorbed much of the sauce while chilling.
Because the mozzarella topping is already cooked, reheated portions may not have exactly the same freshly melted finish as the original casserole. Even so, the saucy pasta and tender meatballs remain comforting for a quick next-day lunch or dinner.
When you are ready for a dessert to follow this hearty meal, finish with our easy berry ice box cake for a cool, fruity contrast.
Easy Dump and Bake Meatball Casserole
Ingredients
Method
- Heat the oven to 425°F and lightly grease a 9 x 13-inch baking dish. Add the uncooked pasta, marinara sauce, and water to the dish, then stir until the pasta is coated and mostly submerged.
- Arrange the frozen, fully cooked meatballs evenly over the pasta mixture. Cover the dish tightly with aluminum foil so steam stays inside during baking.
- Bake covered for about 40 minutes, or until the pasta is tender and the meatballs are heated through. Carefully remove the foil, sprinkle the mozzarella evenly over the top, and bake uncovered for another 5 minutes, until the cheese melts.
Notes
Final Thoughts
This easy dump and bake meatball casserole proves that a satisfying homemade dinner does not require a long ingredient list or several cooking pans. Frozen fully cooked meatballs, uncooked penne, jarred marinara, water, and mozzarella come together in one dish with only about 10 minutes of hands-on preparation.
Remember the two keys to success: keep the casserole tightly covered for the first 40 minutes, and use the meatballs straight from the freezer. Once the pasta is tender and the meatballs are hot, uncover the dish, add the cheese, and bake for 5 more minutes.
Serve it warm with a simple salad or garlic bread, and enjoy the rich tomato sauce, tender pasta, savory meatballs, and melted mozzarella in every bite. It is a dependable dinner for busy evenings when you want maximum comfort with minimal effort.