Shepherd's Pie Recipe | Saveur

Ingredients

• 14 unsalted butter, divided, 2 Tbsp. cubed
• 2 lb. boneless lamb shoulder, trimmed and cut into ½-in. chunks, patted dry with paper towels
• Kosher salt and freshly ground black pepper
• 2 medium leeks, white parts only, finely chopped
• 2 medium carrots, peeled and finely chopped
• 2 tbsp. all-purpose flour
• 1½ cups beef stock
• 1 tbsp. finely chopped rosemary leaves
• 1 tbsp. finely chopped thyme leaves
• 1 tbsp. Worcestershire sauce
• ⅛ tsp. freshly grated nutmeg
• 1½ cups fresh or frozen peas
• 3 large russet potatoes (2 lb.), peeled and quartered
• ½ cups half-and-half