INGREDIENTS
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1 1/2 pounds Russet potatoes (about 3 large)
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5 tablespoons olive oil or any neutral oil, such as canola, divided
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2 (6- to 8-ounce) sirloin or boneless rib-eye steaks, approximately 1 to 1 1/4 inches thick, at room temperature
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3 tablespoons unsalted butter, at room temperature
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1 small shallot
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1 medium lemon
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Leaves of 3 to 4 sprigs fresh thyme
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4 teaspoons kosher salt, divided
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2 teaspoons coarsely ground black pepper