A comfort food that jumped the pond and landed on many Southern tables is shepherd’s pie. The meat base of this dinner must be lamb in order to be called shepherd’s pie. If beef is used, then it is a Cottage pie. For this recipe, we started the lamb in the slow cooker to deepen the flavors. Layer in green peas, carrots, and onions and top with a layer of prepared mashed potatoes. You’re family will love gathering around the table for this comforting dinner.