Beef stir-fry is a quick and flavorful dish that can be made with ground beef. Start by browning the ground beef in a hot skillet. Remove the beef from the skillet and set it aside. In the same skillet, sauté your choice of vegetables, such as bell peppers, onions, and broccoli, until they are tender-crisp. Return the beef to the skillet and add a sauce of your choice, such as soy sauce, hoisin sauce, or teriyaki sauce. Stir everything together and cook until the beef is heated through and the flavors have melded together. Serve the beef stir-fry over steamed rice or noodles for a satisfying meal.