For Sauce: Brown onions in olive oil over medium heat. Add remaining ingredients. Simmer 2 to 2 1/2 hours, stirring occasionally and adding water as needed. Add meatballs during last 30 minutes. Remove bay leaves. Serve with noodles and bread. For meatballs: Soak bread in water for 2 to 3 minutes. Squeeze out moisture. Combine bread with remaining ingredients. Form small balls and place on baking sheet sprayed with cooking spray or a thin coat of olive oil. Bake in oven at 350 for 30 minutes. When finished, place on papertowel to drain. Add to mostaccioli sauce during last 30 minutes.