Cook pasta according to package directions; drain. Return to pan. Stir in sauce and meatballs. Transfer to 3-quart rectangular baking dish. Bake, covered, in a 350°F oven for 30 minutes.
Meanwhile, in a small bowl combine Mozzarella cheese and Parmesan cheese. Uncover pasta mixture and top with cheese mixture and bake, uncovered, for 10-15 minutes more.