Beef stroganoff is a rich and creamy dish that is sure to impress. In a skillet, brown strips of beef with onions and garlic. Remove the beef from the pan and set aside. In the same pan, sauté mushrooms until golden. Add flour and cook for a minute, then gradually stir in beef broth and sour cream. Return the beef to the pan and let it simmer until the sauce thickens. Serve over egg noodles or rice for a decadent and delicious meal.