The primary ingredient in a typical shepherd's pie is ground meat, traditionally lamb. This classic dish, originating from the British Isles, consists of a layer of cooked ground lamb mixed with vegetables such as peas, carrots, and onions, all covered by a layer of creamy mashed potatoes. The pie is baked until the top is golden and slightly crispy. Shepherd's pie is often associated with comfort food, being hearty and flavorful, making it a popular choice in numerous regions. When made with beef, it is technically called "cottage pie."