My Best Spaghetti & Meatballs Recipe

In a large bowl, combine the first eight ingredients. Add beef, pork and veal; mix lightly but thoroughly. Shape into 1-in. balls. In a large skillet, heat oil over medium heat. Brown meatballs in batches; drain. In a 6-qt. stockpot, heat oil over medium heat. Add onion; cook and stir 3-5 minutes or until tender. Add garlic; cook and stir 2 minutes. Add tomato paste; cook and stir 3-5 minutes or until paste darkens. Add wine; cook and stir 2 minutes to dissolve any browned tomato paste. Stir in tomatoes, parsley, sugar, salt, pepper and pepper flakes. Bring to a boil. Reduce heat; simmer, uncovered, 15-20 minutes or until thickened, stirring occasionally. Add basil and meatballs; cook 20-25 minutes longer or until meatballs are cooked through, stirring occasionally. Serve meatballs and sauce with spaghetti. Sprinkle with additional cheese.