4piecesgreen onions, chopped (reserve some for garnish)
1cupbeef broth
2tablespoonscornstarch
3tablespoonswater
as neededservingcooked rice
Instructions
In a large bowl, combine soy sauce, brown sugar, vegetable oil, minced garlic, minced ginger, and red pepper flakes. Whisk until sugar is dissolved and well mixed.
Add the sliced flank steak into the bowl and toss to coat all the pieces in the marinade.
Transfer the beef and marinade into the slow cooker along with the beef broth. Stir gently to combine.
Cover and cook on low for 6-8 hours or high for 3-4 hours, until the meat is tender.
About 30 minutes before serving, mix cornstarch and water in a small bowl to form a slurry. Stir it into the slow cooker to thicken the sauce.
Once the sauce has thickened to your liking, stir in chopped green onions, reserving a few for garnish.
Serve the Mongolian beef over cooked rice, topping it with remaining green onions for garnish.