Foryoueats: Steak Diane

Ingredients

• 16 oz steak flattened to ¼-inch thickness
• 1 ½ tsp kosher salt Diamond Crystal brand
• 1 tbsp olive oil
• 2 tbsp unsalted butter
• ½ c chopped shallot
• 1 c sliced cremini mushrooms
• 2 tsp minced garlic
• ¼ c cognac
• 1 tbsp beef demi-glace
• 2 tsp Dijon mustard
• 6 tbsp heavy whipping cream
• 2 tsp Worcestershire sauce
• kosher salt Diamond Crystal brand
• black pepper
• parsley optional topping