This is a wonderful meatball sub recipe for the Super Bowl or anytime you want a hearty, flavorful sandwich. I love caramelized onions & will eat them on just about anything. The onions take about 30 minutes to caramelize, but it is so worth it.
This recipe will take some time and some work, but it is frugal, hearty eating at its best. You could probably make the meatballs earlier in the day or the night before to keep the prep time more manageable.
Click title for link at SmittenKitchen. The photos there will have you drooling.