"Hanger steak pairs perfectly with a hearty red wine reduction...."
INGREDIENTS
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3 tablespoons extra-virgin olive oil, divided
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12 ounces assorted mushrooms, torn or cut into large pieces
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Kosher salt, freshly ground pepper
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4 tablespoons (1/2 stick) unsalted butter, divided
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1 1/2-pound hanger steak, trimmed, pounded to 1/2" thickness
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Coarsely cracked black pepper
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3 garlic cloves, lightly crushed
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1 6" sprig rosemary
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1 cup dry red wine
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3/4 cup low-salt chicken stock
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2 tablespoons chopped fresh tarragon