Mongolian Beef Stir-Fry is a quick and easy version of the classic recipe. Instead of marinating the beef, this recipe simply stir-fries it with green onions, garlic, and ginger in a hot wok. The sauce is made with soy sauce, brown sugar, and other seasonings, creating a delicious glaze that coats the beef. This stir-fry is perfect for busy weeknights when you want a flavorful and satisfying meal in a short amount of time.