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Dump and Bake Meatball Casserole

A comforting all-in-one bake where rotini, tender beef meatballs, and rich tomato sauce meld in the oven—no pre-cooking needed. A bubbly, cheesy crowd-pleaser that’s easy to assemble and perfect for busy weeknights.
Prep Time 10 minutes
Cook Time 45 minutes
Total Time 55 minutes
Servings 6

Ingredients
  

  • 1 13 x 9-inch baking dish (prep implied)
  • 8 ounces about half a standard package uncooked rotini pasta
  • cups marinara sauce feel free to use a smoother or chunkier variety
  • 2 cups water or low‑sodium beef broth for extra depth
  • 14 –16 ounces fully cooked miniature beef meatballs thawed if previously frozen
  • 1½ to 2 cups shredded mozzarella or Italian‑blend cheese
  • Optional garnishes: a sprinkle of grated Parmesan fresh chopped basil or parsley, crushed red pepper

Instructions
 

  • Preheat your oven to 425°F.
  • In your 13×9” baking dish, combine uncooked rotini, marinara, water (or broth), and beef meatballs. Stir gently to distribute evenly. Add a pinch of salt (and optional garlic powder or oregano, if using).
  • Cover the dish tightly with aluminum foil and bake for 35 minutes.
  • Carefully remove the foil, stir to check the pasta—if it’s still too firm, re-cover and bake a few more minutes until just al dente.
  • Once the pasta is nearly done, uncover fully and sprinkle the cheese evenly over the top.
  • Return to the oven, uncovered, for 5–10 minutes, or until cheese is melted and lightly golden.
  • Remove from oven, let rest 2–3 minutes, then add optional garnishes before serving.

Notes

  • To boost flavor without extra work, swap water for low‑sodium beef broth.
  • Add a handful of thinly sliced mushrooms or spinach between pasta and cheese for extra veggies.
  • For a richer sauce, stir in 2 tablespoons of ricotta or cream before baking.
  • If using store‑bought meatballs with seasoning included, taste the sauce before adding salt.
  • Leftovers reheat well in the oven with a splash of water or sauce to revive moisture.