Mix all ingredients except Meatballs and spaghetti in 3-quart saucepan; break up tomatoes. Heat to boiling; reduce heat. Cover and simmer 30 minutes, stirring occasionally.Prepare Meatballs; drain. Stir meatballs into tomato mixture. Cover and simmer 30 minutes longer, stirring occasiona Serve over spaghetti and, if desired, with Parmesan cheese.