Ingredients: - 1 lb (450g) beef steak (sirloin or tenderloin), sliced into thin strips - 2 tablespoons olive oil - 1 onion, finely chopped - 2 cups mushrooms, sliced - 2 cloves garlic, minced - 1 cup beef broth - 1 cup sour cream - 2 tablespoons flour - 1 tablespoon Worcestershire sauce - Salt and pepper to taste - Cooked egg noodles or rice (for serving) - Fresh parsley (optional, for garnish) Instructions: 1. Sear the beef: In a large skillet, heat olive oil over medium-high heat. Add the beef strips, season with salt and pepper, and cook until browned. Remove and set aside. 2. Sauté vegetables: In the same skillet, add onions and mushrooms. Cook until softened, about 5 minutes. Add garlic and cook for an additional minute. 3. Make the sauce: Sprinkle flour over the vegetables, stirring to combine. Gradually add beef broth, stirring continuously, until thickened. Add Worcestershire sauce. 4. Combine: Lower the heat, stir in sour cream, and return the beef to the skillet. Mix well and heat through. 5. Serve: Serve over cooked egg noodles or rice. Garnish with fresh parsley if desired. Enjoy!