"This shepherd's pie is made with ground lamb or beef and caramelized onions topped off with mashed potatoes and Cheddar cheese...."
INGREDIENTS
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3 tablespoons olive oil
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2 pounds (about 6 medium) onions, thinly sliced crosswise into rounds
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1 teaspoon kosher salt
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3 pounds all-purpose potatoes, such as Yukon Gold, scrubbed but not peeled and cut into 2-inch (5-cm) chunks
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4 garlic cloves, smashed with the flat side of a knife
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1 teaspoon kosher salt, plus more to taste
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4 tablespoons unsalted butter (2 oz), cut into 4 pieces
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1 tablespoon olive oil
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3 medium (about 1 1/2 cups) carrots, scrubbed or peeled and finely diced
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2 pounds ground lamb (or ground beef)
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1 1/2 teaspoons minced fresh thyme leaves
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1 teaspoon kosher salt
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2 tablespoons all-purpose flour
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1 tablespoon store-bought or homemade tomato paste (ketchup will do in a pinch)
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2 cups homemade chicken stock or low-sodium canned chicken broth
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1 cup grated Cheddar (3 1/2 oz)