Meatball Sub Recipe

These meatball subs (or heroes/hoagies, whatever you grew up calling them) are one of my favorite comfort foods. For some reason, I haven't been able to find a place near me that makes them the way I want, so this is my homemade version. You don't have to make them into a sub if you don't want. Just eat them the Italian way, on their own -- but maybe with a hunk of  bread to dip in the sauce.