Preheat the oven to 350°F (175°C).
In the 9x13 inch baking dish, spread the frozen meatballs evenly across the bottom.
Sprinkle the uncooked pasta over the meatballs.
In a separate mixing bowl, combine the marinara sauce, water, Italian seasoning, salt, and pepper. Mix well to combine.
Pour the sauce mixture evenly over the meatballs and pasta in the baking dish, making sure the pasta is submerged in the sauce.
Cover the dish with aluminum foil or a lid to trap steam during cooking.
Bake in the preheated oven for 25 minutes.
After 25 minutes, remove the foil and sprinkle the shredded mozzarella and grated Parmesan cheese evenly over the top.
Return the dish to the oven uncovered and bake for an additional 5-10 minutes until the cheese is melted and bubbly.
Remove from the oven, let it rest for 5 minutes, then serve hot.