Meatball Hoagies

INGREDIENTS

• 1 medium onion, thinly sliced
• 1 medium red or green sweet pepper, seeded and cut into thin strips
• 1 tablespoon olive oil
• 16 ounces frozen cooked Italian meatballs
• 2 cups refrigerated Classico® Four Cheese pasta sauce
• 1/4 teaspoon crushed red pepper
• 6 hoagie buns or ciabatta rolls, split
• 6 slices provolone cheese