INGREDIENTS
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For the filling:
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2 tablespoons butter
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2 large yellow onions, diced
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3 large carrots, diced
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2 stalks celery, diced
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3 garlic cloves, minced
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2 pounds ground lamb (substitute all or part ground beef if you'd like)
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Kosher salt and black pepper
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2 tablespoons all purpose flour
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1 1/2 cups beef stock
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1 tablespoon brown sugar
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1 tablespoon Worcestershire sauce
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2 sprigs fresh rosemary
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1 cup frozen peas
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1/3 cup coarsely chopped fresh parsley
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For the mashed potatoes:
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3 pounds Yukon Gold potatoes, peeled
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kosher salt
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1 cup whole milk
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1/2 cup heavy cream
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1/2 cup (1 stick) unsalted butter
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black pepper
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To complete the dish:
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12 Idaho potatoes
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1/2 grated cheddar cheese
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Olive oil