
Our food editors agree that this is one of the best-tasting and most elegant shepherd's pies they've ever had. The recipe is not as complicated as it appears at first glance—the different components all come together to make a complete meal in a single dish. The potatoes are stiffer than the average mash because they will be forming the crust for the pie.
• Lamb shanks can be made 1 day ahead of assembling shepherd's pie and chilled, covered. Bring to room temperature before proceeding.
• Mashed potatoes can be made 1 day ahead of assembling shepherd's pie and chilled, covered. Bring to room temperature before proceeding.
• Shepherd's pie can be assembled (before being drizzled with melted butter) 1 day ahead and chilled, covered. Let stand at room temperature 1 hour before drizzling with butter and baking.