Mongolian Beef Lettuce Wraps are a healthy and refreshing alternative to traditional wraps. Instead of using tortillas or bread, the filling of Mongolian beef is wrapped in crisp lettuce leaves. The beef is cooked with onions, garlic, and a tangy sauce, then spooned onto the lettuce leaves. Add some shredded carrots, sliced cucumbers, and a drizzle of hoisin sauce for extra crunch and flavor. These lettuce wraps make a great appetizer or light lunch.