If you're looking for a healthier version of Mongolian Beef, try making some modifications to the traditional recipe. Use lean cuts of beef, such as sirloin or flank steak, and reduce the amount of sugar and sodium in the sauce. You can also add more vegetables, such as bell peppers, broccoli, or snap peas, to increase the nutritional value of the dish. Enjoy this lighter version of Mongolian Beef without sacrificing flavor.