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.
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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!

Soup

Slow Cooker Chicken Fajita Soup

4 hrs 10 mins

Dinner

Slow Cooker Kalua Pulled Pork

16 hrs 5 mins

Dinner

Chicken and Noodles

3 hrs 5 mins

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Slow Cooker Mongolian Beef

4.69 from 63 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.

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

Welcome to my kitchen! I am Alyssa Rivers and the food blogger behind The Recipe Critic. The blog launched in 2012 as a place to share my passion for cooking. I love trying new things and testing them out with my family. Each recipe is tried and true, family-tested and approved.

Read More About Me

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Slow Cooker Mongolian Beef - The Recipe Critic (2024)

FAQs

Why is Mongolian beef so tender? ›

The science behind using baking soda to marinate Mongolian Beef: The alkalinity of baking soda raises the pH of the meat, causing the proteins to move further apart, and that makes it more tender and easier for us to chew or bite into.

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!

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.

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 do Chinese put on meat to make it 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 secret ingredient in stir fry beef? ›

Velvet the beef: The velveting technique involves tenderizing, marinating, and a quick searing of the meat. To tenderize: Sprinkle with baking soda (the secret Chinese meat tenderizer). To marinate (a quick marinade): Add basic beef marinade and mix to coat evenly. Let marinate for 15 minutes or up to overnight.

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 is the difference between Szechuan beef and Mongolian beef? ›

Szechuan Beef vs Mongolian Beef

Szechuan Beef has a sweet and spicy flavor with added chili peppers and Szechuan peppercorns. The Szechuan peppercorns has a distinctive tingly numbing sensation when eaten. Mongolian beef has a mild and much simpler taste, making it a kids' favorite, outside of broccoli beef.

What beef is better for slow cooker? ›

7-Bone Chuck Roast

Identified by the 7-shaped bone it contains. Rich and flavorful, it's ideal for the slow-cooker.

How do you make meat tender in a slow cooker? ›

How to Avoid Dry or Tough Meat
  1. Choose the Right Cuts. The best cuts of meat for a slow cooker are well-marbled and fatty. ...
  2. Add Just Enough Liquid. ...
  3. Be Patient. ...
  4. Cook Low and Slow.
Apr 16, 2020

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.

What's the best steak to use in a slow cooker? ›

Here are the very best beef cuts to keep on hand to slow cook:
  1. Chuck steak.
  2. Round steak.
  3. Blade steak.
  4. Topside.
  5. Silverside.
  6. Skirt steak.
  7. Shin (gravy) beef.
  8. Sausages.

Can you overcook steak in a slow cooker? ›

Slow cookers are specially designed to cook food for long periods of time, but yes, you can still overcook in a slow cooker if something is left on the wrong setting for longer than it's supposed to be.

How much liquid do you put in a slow cooker for steak? ›

Do you add water when cooking meat in a slow cooker? If your slow cooker is 3/4 full, no extra liquid is required. However, if you're cooking a smaller amount of food, add 1-2cm of liquid in the bottom of the slow cooker bowl to ensure there's enough liquid for cooking.

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.

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.

Why Mongolian meat is good? ›

Therefore, Mongolia pastureland grass-feed animals' meat is considered organic because it contains low heavy metals compared to the other farm-breed animal meat. Instead, Mongolian meat contains a higher amount of essentials metals such as iron and zinc. Moreover, it is rich in protein.

Why is some beef more tender than others? ›

Tenderness, or toughness, is affected by the purpose of the muscles that produce the meat cut. The goal for many of these muscles is to contract so that an animal can move. We can expect muscles that are more involved in animal movements to be more tough than muscles that simply support the animal.

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