1Heat oven to 350º. Mix all ingredients. Shape mixture into 1 1/2-inch balls. Place in ungreased jelly roll pan, 15 1/2x10 1/2x1 inch. Bake uncovered 15 to 20 minutes or until beef is no longer pink in center and juice is clear.
2Meanwhile, heat oil in Dutch oven over medium-high heat. Cook onion and garlic in oil, stirring occasionally, until onion is tender.
3Stir in remaining Sauce ingredients except spaghetti and cheese, breaking up tomatoes. Heat to boiling; reduce heat to low. Cover and simmer 30 minutes, stirring occasionally.
4Add meatballs to sauce. Cover and simmer 15 minutes. Cook and drain spaghetti as directed on package. Place spaghetti on large platter. Top with meatballs and sauce. Sprinkle with cheese.