Beef stroganoff is a classic Russian dish that can be made with ground beef for a quick and easy version. Start by browning the ground beef in a skillet, then remove it from the skillet and set it aside. In the same skillet, sauté diced onions and sliced mushrooms until they are tender. Return the beef to the skillet and add sour cream, beef broth, and Dijon mustard. Stir everything together and cook until the sauce is heated through. Serve the beef stroganoff over egg noodles or rice for a comforting and satisfying meal. Garnish with chopped parsley for a pop of freshness.