Steps
1. Season the beef steak with salt and pepper on both sides.
2. Heat 1 tbsp of olive oil in a skillet over medium-high heat. Add the steak and cook to desired doneness, about 3-4 minutes per side for medium-rare. Remove from the skillet and set aside.
3. In the same skillet, add the remaining olive oil and sauté the mushrooms, onion, and garlic until softened and golden brown.
4. Pour in the beef broth and scrape the bottom of the skillet to release any browned bits. Bring to a simmer and cook for 2-3 minutes.
5. Stir in the heavy cream, Worcestershire sauce, and Dijon mustard. Cook for another 2 minutes until the sauce thickens slightly.
6. Place the cooked steak back into the skillet and spoon the mushroom sauce over the top. Cook for an additional minute to heat through.
7. Garnish with fresh parsley and serve hot.