Shepherd's Pie | Saveur

Ingredients

• 2 tbsp. olive oil
• 1 1⁄2 lb. trimmed lamb shoulder, cut into 1/4″ cubes
• 2 ribs celery, finely chopped
• 2 cloves garlic, finely chopped
• 1 large carrot, finely chopped
• 1 large yellow onion, finely chopped
• 2 tbsp. tomato paste
• 1⁄2 cup red wine
• 1⁄2 cup beef stock
• 1 tbsp. Worcestershire sauce
• 2 bay leaves
• 1 (15-oz.) can whole peeled tomatoes in juice, crushed by hand
• Kosher salt and freshly ground black pepper, to taste
• 2 lb. russet potatoes, peeled
• 1⁄2 cup heavy cream
• 8 tbsp. unsalted butter