In a large bowl, mix bread crumbs, cheese, pepper and salt; stir in eggs. Add beef; mix lightly but thoroughly. Shape into 1-1/2-in. balls. In a large skillet, brown meatballs in batches over medium heat; drain., Place the first 5 sauce ingredients in a 6-qt. slow cooker; stir in garlic and seasonings. Add meatballs, stirring gently to coat. Cook, covered, on low 5-6 hours, until meatballs are cooked through., Remove bay leaves. Serve with spaghetti.