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!
Slow Cooker Mongolian Beef - The Recipe Critic (2)

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.
Slow Cooker Mongolian Beef - The Recipe Critic (4)

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

Soup

Slow Cooker Chicken Fajita Soup

4 hrs 10 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

4.69 from 64 votes

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

Why is Mongolian beef so tender? ›

Coating beef in cornstarch is important because it helps to tenderize the beef. It also helps to thicken the sauce, allowing it to fully coat the beef. Flank steak (sliced against the grain) is most commonly used to make Mongolian beef, although any quick cooking beef works great.

What is Mongolian beef sauce made of? ›

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!

Can you use skirt steak in a slow cooker? ›

You will be addicted to this Crockpot Skirt Steak. The flavors are unreal and it takes 2 minutes to prep — pretty much guaranteed to enter into your dinner rotation. You can swap the skirt steak for flank steak & use the same seasoning, also delicious.

What is a good substitute for flank steak in a slow cooker? ›

If you are looking for an alternative to flank steak, the best would probably be skirt steak. Typically flank steak is more expensive, but skirt steak is very similar in texture and flavor. Feel free to add some broccoli to the slow cooker for a dish that tastes like P.F.

How do Chinese get their beef so tender? ›

While there are several ways to velvet, a pound of meat needs about two teaspoons of cornstarch and two teaspoons of oil, says Leung. You may also include two to three tablespoons of water. For beef, add a 1/4-teaspoon of baking soda for tenderizing. Additional seasonings are optional and vary from recipe to recipe.

What is the difference between Mongolian beef and Chinese beef? ›

Mongolian Beef can be described as having a savory soy-based sauce with scallions as its main aromatic. Szechuan Beef has a similar soy sauce-based profile but with the addition of a spicy element, such as fresh or dried chilis and/or Sichuan peppercorns for a numbing sensation.

What is a substitute for cornstarch in Mongolian beef? ›

It gives the Mongolian beef its signature glossy, thick sauce. If you can't find cornstarch, use flour instead, but it may not provide the same clear, glossy finish. Soy sauce: This gives the dish its savory, umami flavor.

What ethnicity is Mongolian beef? ›

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.

Can you overcook steak in a slow cooker? ›

If you cook meat at too high of a temperature in your slow cooker, you're likely to overcook it. When you cook your food slowly at a lower temperature, you unlock the magic of slow cooking.

What beef is best for slow cooking? ›

Here are the very best beef cuts to keep on hand to slow cook:
  • Chuck steak.
  • Round steak.
  • Blade steak.
  • Topside.
  • Silverside.
  • Skirt steak.
  • Shin (gravy) beef.
  • Sausages.

Do you brown steak before putting in crockpot? ›

While this hands-off, low-effort method will produce delicious results, it is worth adding one additional (straightforward) step when you're slow-cooking beef. Before putting the meat in the slow cooker, brown it in a skillet for a few extra minutes.

What is a good substitute for flank steak in Mongolian beef? ›

The best meat to use instead of flank steak is skirt steak, flat iron steak, flap (sirloin tip) steak, tri-tip steak, and hanger steak (in that order). Each has its differences, but all do well being marinated and cooked over high heat, like flank steak.

Does flank steak get more tender the longer you cook it? ›

If you're looking for a tender and flavorful way to cook flank steak, consider slow cooking. Slow cooking allows the meat to break down and become melt-in-your-mouth tender while infusing it with rich flavors.

What is the underrated cut of steak that's ideal for slow cooking? ›

Under blade steak maintains its shape even when slow-cooked

But unlike most steak cuts, the under blade takes just as well to slow-cooking — this cut will maintain its integrity through the low and slow cooking process, per The Spruce Eats. Also known as a chuck flat, according to Beef.

What makes beef really tender? ›

In addition to cooking properly, you could also consider marinating meat cuts to improve tenderness. Marinades use weak acids to help tenderize the surface of the meat cut. These weak acids often come from products such as vinegar, wine, lemon juice or tomatoes.

What is the most tender beef to eat? ›

Tenderloin Steak

The most tender of all cuts of beef, tenderloin steaks are lean and known for their delicate, butter-like texture and thick cut.

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