Mix beef, onion, green pepper, crackers, and egg in a bowl, add Worcestershire sauce, garlic, seasoned salt, and black pepper. Form into 8 meatballs and place in baking dish.
STEP 3
Bake meatballs for 20 minutes.
STEP 4
While baking, heat spaghetti sauce in saucepan until simmering. Add meatballs and simmer for 20 minutes.
STEP 5
Place a meatball, mozzarella, Parmesan, and sauce in each roll. Bake sandwiches until cheese melts, about 7 minutes.