Slow Cooker Mongolian Beef - The Recipe Critic (2024)

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Tender pieces of flank steak are slow-cooked in the tastiest sweet and savory sauce. This slow cooker Mongolian beef is melt-in-your-mouth perfection and bursting with flavor. Quick and easy to prepare and one of our favorite slow cooker meals!

If you love restaurant Mongolian Beef, this super easy make-at-home rendition will be your new favorite dinner. Serve over this easy fried rice for a complete meal. And if you really want to wow your guests, egg rolls and vegetable stir-fry on the side would be amazing!

Slow Cooker Mongolian Beef - The Recipe Critic (1)

Slow Cooker Mongolian Beef

Mongolian beef made in the slow cooker is life-changing! Slow cooking the beef ensures that it’ll be delicate and succulent. This slow cooker Mongolian beef recipe is an explosion of flavors in every bite! Garlic, soy sauce, and brown sugar come together to create a caramelized sauce that coats the tender juicy pieces of steak.

This is hands down one of the BEST dinners that I have ever made. My family couldn’t get enough of it! It’s so easy to make restaurant-worthy meals for the family at home. If you love this slow cooker Mongolian beef recipe then I can’t wait for you to try more of our favorites. Make this sweet and sour chicken, these lettuce wraps, of this incredible bang bang chicken.

Mongolian Beef Ingredients

Slow cooker Mongolian beef is SO easy to make with minimal ingredients. The ingredients are simple, but the outcome is incredible! Your dinner is prepped and ready to go in under 10 minutes!

  • Flank Steak:Sirloin can be substituted here but avoid stew meat.
  • Corn Starch: This acts as a natural tenderizer for the beef.
  • Olive Oil: Use canola oil if you’d rather.
  • Garlic: Minced or chopped will give the most flavor.
  • Soy Sauce: Either low-sodium soy sauce or coconut aminos can be used here.
  • Water: This will help make it saucy.
  • Brown Sugar:Light or dark brown sugar is both great in the sauce.
  • Carrots: Grate a carrot or instead use pre-shredded carrots.
  • Green Onions and Sesame Seeds: Optional garnish, but make a stunning topping.

How to Make Mongolian Beef in a Slow Cooker

The beef literally just melts in your mouth! You can always count on the slow cooker for tender beef. The tasty sauce clings to the cornstarch-coated steak and every bite is bursting with flavor. See the recipe card below for exact measurements.

  1. Cut and Coat: Cut the flank steak thinly and across the grain to ensure a tender bite. Place the steak in a ziplock bag with the cornstarch then shake to coat. Make sure to coat the beef evenly.
  2. Add ingredients to the Slow Cooker:Mix the oil, garlic, soy sauce, water, brown sugar, and carrots in the slow cooker.
  3. Coat the Beef: Stir the beef into the slow cooker making sure it’s well-coated
  4. Cook:Set on high for 2-3 hours or on low for 4-6 hours.
  5. Garnish and Enjoy: Garnish with chopped green onion and sesame seeds for added flavor and texture then enjoy over rice!
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Tips and Variations

Everything about this Mongolian recipe is perfect, and I know that it will become a family favorite at your house just like it did at ours! Here are some ideas and variations to make it your own! I also included instructions for making it in the instant pot when you’re short on time!

  • Slicing the Beef:When slicing the flank steak make sure to slice it against the grain. I like to slice mine about 1/4 inch thick.
  • Veggies: Roast broccoli, green beans or red bell pepper then stir in before serving. Vegetables add texture and nutrition.
  • Instant Pot:This easily converts to a quick Instant Pot recipe. Saute the steak on high until browned. Add the sauce ingredients and cook on “Manual” for 10 minutes. Lastly, quick release the pressure and enjoy!
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How to Store Leftovers

Store any leftover Mongolian beef you may have, because it’s great for heating up and enjoying later! I like to make a little extra rice as well for a quick lunch that’s super satisfying!

  • In the Refrigerator:Place leftovers in a sealed container for up to 4 days.
  • In the Freezer:Once cooled, store leftovers in an air-tight container or freezer ziplock bag for up to 4 months. Thaw in the refrigerator before rewarming.
  • To Reheat: Place leftovers in a microwave-safe bowl then heat for 1-2 minutes or until warmed through.
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More Savory Slow Cooker Recipes

Slow cooker dinners always save the day! They’re easy and SO delicious. Everyone loves coming home to a warm home-cooked dinner. Try some of our favorites this week for dinner. You’ll love them all!

Slow Cooker

Crockpot Salisbury Steak

3 hrs 20 mins

Side Dishes

Crockpot Green Beans

3 hrs 5 mins

Dinner

Slow Cooker Kalua Pulled Pork

16 hrs 5 mins

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Slow Cooker Mongolian Beef

By: Alyssa Rivers

Tender pieces of flank steak are slow cooked in the tastiest sweet and savory sauce. This slow cooker Mongolian beef is melt-in-your-mouth perfection and bursting with flavor. Quick and easy to prepare and one of our favorite slow cooker meals!

Prep Time: 10 minutes minutes

Slow Cooker: 4 hours hours

Total Time: 4 hours hours 10 minutes minutes

Servings: 6 Servings

Ingredients

Instructions

  • Cut flank steak into thin strips. In a ziplock bag add flank steak pieces and cornstarch. Shake to coat.

  • In a medium-sized bowl, add the olive oil, minced garlic, soy sauce, water, and brown sugar. Whisk to combine and add to the slow cooker.

  • Add the grated carrots and coated flank steak to the slow cooker and stir until coated in the sauce.

  • Cover and cook on high for 2-3 hours or on low for 4-5 hours.

  • Serve over rice and garnish with green onions and sesame seeds.

Video

Notes

Updated on November 08, 2023

Originally Posted on August 17, 2015

Nutrition

Calories: 348kcalCarbohydrates: 36gProtein: 28gFat: 10gSaturated Fat: 3gPolyunsaturated Fat: 1gMonounsaturated Fat: 6gCholesterol: 68mgSodium: 1705mgPotassium: 555mgFiber: 1gSugar: 28gVitamin A: 3564IUVitamin C: 1mgCalcium: 61mgIron: 3mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Additional Info

Course: Dinner, Main Course

Cuisine: Asian American

Tried this recipe?Mention @alyssa_therecipecritic or tag #therecipecritic!

About Alyssa Rivers

Alyssa Rivers is the author of 'The Tried and True Cookbook', a professional food photographer and experienced recipe-developer. Having a passion for cooking, her tried and true recipes have been featured on Good Morning America, Today Food, Buzzfeed and more.

Read More About Me

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Slow Cooker Mongolian Beef - The Recipe Critic (2024)

FAQs

What is Mongolian beef sauce made of? ›

Whisk the Mongolian Beef Sauce ingredients together consisting of soy sauce, water, brown sugar, Asian sweet chili sauce, rice wine, hoisin, pepper, sriracha and cornstarch. Stir Fry Beef. Heat 1-2 tablespoons peanut or vegetable oil a large skillet over high heat until very hot and sizzling.

How do you make slow cooked beef tender? ›

Add stock, water or other liquids, making sure there is enough to come up 1-2cm from the base of the slow cooker bowl. Cover with the lid and cook on High for 4-5 hours or Low for 5-8 hours, or until the meat is tender and pulls apart easily with a fork.

Is Mongolian beef from Mongolia? ›

Despite its name, the dish has nothing to do with Mongolian cuisine. Mongolian beef is among the meat dishes developed in Taiwan where Mongolian barbecue restaurants first appeared. Thus, none of the ingredients or the preparation methods are drawn from traditional Mongolian cuisine but rather from Chinese cuisine.

Why is my beef still tough after 4 hours in the slow cooker? ›

“Beef may be tough in the slow cooker if you haven't added enough liquid, or haven't cooked it for long enough,” Kristen Carli, M.S., R.D., owner of Camelback Nutrition & Wellness, tells SELF. “For cuts of meat, the fattier cuts are often the ones that get juicy and tender.

Does beef get softer the longer you slow cook it? ›

Collagen makes meat tough when cooked quickly, but when slow-cooked, it breaks down into gelatin, giving you that juicy, tender mouthfeel. Fattier — and cheaper — cuts of beef can also be good for slow cooking, because the fat helps to ensure the beef won't dry out while adding extra flavour.

What is the secret ingredient in stir fry beef? ›

I like to add dark soy sauce to darken the stir fry a bit, if you can't find it, regular soy sauce will work! Baking soda is the secret ingredient to melt in your mouth beef! It also works on chicken or pork.

What can I substitute for flank steak in Mongolian? ›

Other cuts that work with high-heat cooking can also be used to make Mongolian beef. Sirloin is a frequent substitute, as are hanger and skirt steak. Avoid any stewing meats, however.

Can you overcook beef in a slow cooker? ›

It is possible to overcook beef stew in a slow cooker. If you cook it on high for too long, the beef can become tough and dry.

How long does it take for beef to get tender in slow cooker? ›

Add beef broth, carrots, potatoes, onion, celery, Worcestershire sauce, paprika, garlic, and bay leave; stir to combine. Cover, and cook until beef is tender enough to cut with a spoon, on Low for 8 to 12 hours, or on High for 4 to 6 hours.

How do you keep beef from getting tough in a slow cooker? ›

Add Just Enough Liquid

To keep a pot roast from drying out, your slow cooker needs liquid to create a moist environment, and that can include meat or vegetable stock, wine or water.

Why is Mongolian beef so good? ›

The beef is tender and crispy (not oily!) and coated in a sauce that is just the right amount of sweet and salty.

Is Mongolian beef unhealthy? ›

It's worth noting that Mongolian beef can be high in sodium, depending on the amount of soy sauce used in the recipe. To reduce the sodium content, you can use low-sodium soy sauce or reduce the amount of soy sauce used.

Does Mongolian beef contain oyster sauce? ›

Our recipe for Mongolian beef sauce includes oyster sauce, soy sauce, tamari soy sauce (as a replacement for dark soy sauce), chili sauce, sugar, and cooking wine. Check the ingredient list to see precise amounts. Don't forget that you can scale the recipe up and down!

What to do if beef is tough after cooking? ›

You may need some sweetness and acidity to bring up the tough meat. Simmer in liquid. Just like for burnt meat, if your meat gets tough and dry then you can simmer it in a little bit of broth for a couple minutes. Don't allow it to overcook again but just allow the liquid to penetrate the meat.

How do you cook beef so it doesn't get tough? ›

To cook it until it's so tender it falls apart, you'll need to choose a joint like chuck and blade or beef brisket and either braise, slow roast or slow cook it for at least a couple of hours.

Why is my slow cooker beef stew not tender? ›

Not cooking the stew long enough.

Chuck meat is your best bet for beef stew, but it's also a pretty tough cut so it needs time to break down and become tender. Rush the cooking process and the beef will be tough and chewy. Follow this tip: For really tender meat, cook the stew low and slow, for approximately two hours.

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