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
Instructions
Heat oil in a 6-qt. saucepan over medium-high heat. Add lamb, and cook, stirring, until browned all over, 10 to 12 minutes. Using a slotted spoon, transfer to a bowl and set aside. Add celery, garlic, carrot, and onion to pan, and cook until soft, about 5 minutes. Add tomato paste, and cook, stirring, until lightly caramelized, about 2 minutes. Add wine, and cook, stirring to scrape bottom of pan, until wine evaporates, about 8 minutes Add reserved lamb, stock, Worcestershire, bay leaves, and tomatoes, and cook, stirring, until slightly reduced, about 6 minutes. Remove from heat, season with salt and pepper, and transfer to a 9″ deep-dish pie plate; set aside.
Heat oven to 400°. Place potatoes in a 4-qt. saucepan, and cover with water by 1″; bring to a boil over high heat. Cook until tender, about 30 minutes; drain. Meanwhile, bring cream and butter to simmer in a 1-qt. saucepan; keep warm. Transfer potatoes to a food mill or potato ricer, and process into a bowl; add hot cream and butter, season with salt and pepper, and whisk until smooth and fluffy. Spoon potatoes over meat filling in dish, spreading to cover to the edge; drag tines of fork lightly over potatoes to create ridges all over. (Alternatively, fill a piping bag with the potatoes and pipe them in rows over the filling.) Bake until potatoes are golden brown and filling is heated through, about 45 minutes. Let cool 20 minutes; serve with peas.