For a lighter and refreshing take on Mongolian Beef, try making Lettuce Wraps. Instead of serving the beef over rice or noodles, use large lettuce leaves as a wrap. Fill the lettuce leaves with the stir-fried beef, green onions, and any additional toppings or sauces you desire. The crisp lettuce provides a refreshing contrast to the savory beef, making it a perfect option for a light and flavorful dinner.