Steak Diane

INGREDIENTS

• 3 cups thinly sliced cremini mushrooms
• 1/2 cup brandy
• 1 tablespoon Dijon mustard
• 1 teaspoon kosher salt
• Four 6 to 8-ounce filet mignons
• 4 cloves garlic, minced
• 4 tablespoons butter
• 1 tablespoon Worcestershire sauce
• 1/2 cup dry red wine
• 2 tablespoons extra-virgin olive oil
• 1 quart low-sodium beef stock
• 2 shallots, sliced
• 1 teaspoon freshly cracked black pepper