Preheat oven to 350 F. Cook meatballs according to package directions, cut in half. Cook pasta according to package directions, drain and place into a large bowl.
Mix pasta with cooked halved meatballs and marinara sauce. Spread pasta out into a large greased baking dish. Top with shredded mozzarella cheese and grated parmesan cheese. Bake for 20-25 minutes.