In a large oven-safe pan, combine the pasta, marinara sauce, water, and Italian seasoning.
Stir everything together and season with salt and pepper.
Cover the pan with foil and bake for 20 minutes.
Remove the foil and stir in the mozzarella and parmesan cheeses.
Return to the oven and bake uncovered for another 10 minutes until the cheese is bubbly.