Creating the Dump and Bake Meatball Casserole is straightforward. Just follow these simple steps:

1. Preheat your oven to 350°F (175°C).
2. In a large baking dish, spread the frozen meatballs evenly on the bottom.
3. Add the uncooked pasta over the meatballs.
4. Pour the marinara sauce evenly over the pasta and meatballs.
5. Sprinkle the Italian seasoning, garlic powder, and black pepper on top.
6. Carefully pour the water over the entire dish, making sure the pasta is covered.
7. Cover the baking dish tightly with aluminum foil.
8. Bake in the preheated oven for 30 minutes.
9. After 30 minutes, remove the foil and sprinkle the mozzarella and Parmesan cheese evenly on top.
10. Return to the oven and bake uncovered for an additional 5-10 minutes, or until the cheese is bubbly and golden.
11. Remove from the oven and let it cool for a few minutes before serving.

This step-by-step guide ensures you create a delicious casserole with minimal effort!