No-fuss homemade meatballs to die for, simmered in spaghetti sauce, piled onto semi-homemade bread toasted with garlic herb butter, and smothered with mozzarella & provolone cheese? Yeah. I'm talking about a seriously good sandwich here!! My Easy Weeknight Meatball Subs are something you'll want to save, Pin, share, or bookmark for supper! Like.