Mongolian Beef from the Slow Cooker Quick and easy freezer slow cooker meal. Preparation Time: 5 minutes cook: 2 hrs additional: 1 day total: 1 day 2 hrs 5 minutes Servings: 6 Yield: 6 servings Ingredients for Mongolian Beef from the Slow Cooker ¼ cup cornstarch 1 ½ pounds beef flank steak ¾ cup water ¾ […]