This crockpot recipe uses a homemade Hoisin sauce but if you have a bottled favorite you can use that instead.
Originally posted in 2008 during my Year of Slow Cooking.
How to Make Homemade Mongolian Beef from Scratch
Yesterday, I gathered enough guts to give it a go.
If you can use hoisin sauce, you might want to simplify.
But my concoction worked, and surprised Adam and the kids---one of whom has never had "real" Mongolian Beef.
The Ingredients to Make Homemade Mongolian Beef
serves 4(2 adults, 2 kids -- if you'd like more, double the ingredients)
There are a lot of ingredients --- don't get mad!
(updated: I've discovered that a few companies are now putting out a gluten free variety of Hoisin sauce. Feel free to use that if you don't want to make your own! And if you aren't gluten free, just ignore me! ;-) )
FOR THE MEAT:
THIS IS THE SAUCE -- if you have bottle Hoisin, go ahead and use it here instead
AND THEN:
1 teaspoon red chili flakes --- optional -- if you don't like things spicy, you can add at the table if you'd like.
The Directions to Make Homemade Mongolian Beef
But really, the only complicated thing was figuring out what flavors would work and assembling the ingredients---the actual cooking and food preparation was a snap, and the kitchen was clean and mopped at 12noon.
Much better for our wallets, than take-out, and much, much, much less greasy than take-out.

Homemade From Scratch Mongolian Beef Recipe
Ingredients
- (updated: I've discovered that a few companies are now putting out a gluten free variety of Hoisin sauce. Feel free to use that if you don't want to make your own! And if you aren't gluten free, just ignore me! ;-) )
- FOR THE MEAT:
- 2 pounds flank steak
- 3 cloves of garlic, minced
- 4 sliced green onions--one is for garnish
- 1 teaspoon dried minced onion (or 1/2 fresh onion, diced very small)
- THIS IS THE SAUCE -- if you have bottle Hoisin, go ahead and use it here instead (approx 2 cups -- an 18 ounce - 20 ounce bottle)
- 1/2 cup soy sauce (I used La Choy)
- 1/4 cup white wine
- 1/4 cup cooking sherry
- 1/2 tablespoon white wine vinegar (optional--I forgot to add it!)
- 1 teaspoon sesame oil
- 1 teaspoon molasses
- 1 teaspoon ground ginger
- 1/4 teaspoon black pepper
- 1/2 tablespoon peanut butter (if allergic, use black bean paste)
- 3 tablespoon brown sugar
- AND THEN:
- 1/4 cup cornstarch (to dredge meat--don't add to sauce mixture)
- 1 teaspoon red chili flakes --- optional -- if you don't like things spicy, you can add at the table if you'd like.
Instructions
- --slice your meat in thin strips and toss in a Ziploc bag with cornstarch.
- --add all of the liquid and dried spices to your crockpot, and the peanut butter, and mix well.
- Add the garlic and three of the sliced green onions. If you are using fresh onion, add that now, too.
- --put your meat on top, and toss gingerly to coat.
- Cover and cook on low for 4-6 hours. Flank steak is thin and have very little fat, and will cook quickly.
- There isn't a lot of liquid in this dish, so if your crock tends to cook hot, please check it after 3 hours.
- The meat is done when it is no longer pink and has reached desired tenderness.
- I cooked our meat in a 6qt oval slow cooker and it was done after 4 hours on low.
- Serve over steamed or fried rice, and garnish with freshly sliced green onion.