Put the pasta, spaghetti sauce, 3 cups water and meatballs into a 13x9-inch baking dish. Stir to combine. Cover tightly with aluminum foil.
Bake in a preheated 425-degree F oven for about 30 minutes. Uncover, stir and continue to bake for about 10 minutes.
Top with the shredded cheese and bake about 5 to 10 minutes more.