The Kitchn: Steak Diane is the classic steak dinner you’ll fall in love with
Serves 4
4 (6-ounce) beef tenderloin steaks
6 ounces cremini mushrooms
1 large shallot
1 large clove garlic
1/3 cup fresh parsley leaves
2 teaspoons kosher salt, divided
2 teaspoons freshly ground black pepper, divided
2 tablespoons olive oil, divided
2 tablespoons unsalted butter, divided
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