Shepherd's pie is a hearty and comforting British dish made with minced lamb or beef, vegetables, and topped with mashed potatoes. The meat is cooked with onions, carrots, and peas in a rich gravy, then topped with a layer of creamy mashed potatoes. The pie is baked until the top is golden and crispy. Shepherd's pie is a popular dish in British pubs and is perfect for a cozy dinner on a cold evening.