**Steak with Creamy Mushroom Sauce**

Season the steaks with salt and pepper on both sides.

Heat olive oil in a large skillet over medium-high heat. Add steaks and cook until desired doneness, about 4-5 minutes per side for medium-rare. Remove steaks and set aside.

In the same skillet, reduce heat to medium. Add butter, onion, and garlic. Sauté until onion is translucent, about 2-3 minutes.

Add mushrooms and cook until they are soft, about 5 minutes.

Stir in heavy cream, Dijon mustard, and Worcestershire sauce. Bring to a simmer and cook until the sauce thickens, about 2-3 minutes.

Return steaks to the skillet and simmer for an additional minute.

Serve steaks with sauce on top and garnish with fresh parsley