Cavatini I

Ingredients

• 1/4 cup butter
• 1 onion, chopped
• 1 green bell pepper, chopped
• 2 (4.5 ounce) cans sliced mushrooms, drained
• 2 pounds lean ground beef
• 1 (15 ounce) can tomato sauce
• 1 (32 ounce) jar spaghetti sauce
• 4 ounces chopped ham
• 1/2 cup cooked and cubed chicken
• 3 ounces sliced pepperoni sausage
• 1/4 teaspoon crushed red pepper flakes
• salt to taste
• ground black pepper to taste
• 3/4 cup seashell pasta
• 6 ounces rotini pasta
• 2 pounds mozzarella cheese, shredded
• 2 tablespoons grated Parmesan cheese