This Slow Cooker Mongolian Beef recipe is full of juicy beef, garlic, ginger and a big dash of YUM. In just a little over 4 hours in the slow cooker, you will have an authentic (and healthier) Chinese beef dish ready to serve for dinner! Mongolian Beef is one of those classic Chinese dinners you order on a late Friday night when you are in the mood for takeout- and with good ...