Simple Meatball Subs

This recipe for Simple Meatball Subs is one of those slow cooker sandwich recipes that's handy for a game day gathering, potluck, picnic, or weeknight meal. These heart sub sandwiches are easy to make, and they're packed with Italian flavor. This recipe simply requires pre-made meatballs, marinara sauce, buns, and Mozzarella cheese. It's easy to whip up these sandwiches for a social gathering--particularly because the meatballs only need to cook 2 hours in the slow cooker.

Slow Cooker Time HIGH2 hr