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


Slow Cooker Kalua Pulled Pork

16 hrs 5 mins

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Slow Cooker Mongolian Beef - The Recipe Critic (9)



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



  • 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.



Updated on November 08, 2023

Originally Posted on August 17, 2015


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)


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!

Why is Mongolian beef chewy? ›

Like many stir fry dishes, it is important to thinly slice the meat, which means stir-frying will obviously overcook the meat, which in turn will make it tough and chewy. No one wants chewy and tough beef. so this way we will have tender beef stir fry.

How do I reduce the liquid in my slow cooker? ›

If it comes to serving and you open your slow cooker to find a watery sauce, never fear we have an easy answer. Take the lid off, turn the machine up to high heat and leave it for 30-45 minutes to let excess moisture cook off. The liquid will reduce, leaving you with a thick and delicious gravy or sauce.

How do I thicken my slow cooker? ›

As a rule of thumb, dissolve 2 parts cold water and 1 part cornstarch. Add the slurry to your sauce as it simmers in the slow cooker. Cornstarch is always a good way to thicken a sauce or soup but personally I would recommend going a different route as the cornstarch slurry may change the flavor of the meal.

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 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.

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 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.

What cannot be cooked in a slow cooker? ›

10 Foods You Should Never Make in a Slow Cooker
  1. Raw Meat.
  2. Seafood.
  3. Pasta.
  4. Rice.
  5. Delicate Vegetables.
  6. Boneless Skinless Chicken Breasts.
  7. Dairy.
  8. Wine and Other Liquor.
Jan 19, 2024

Can you put raw meat in a slow cooker? ›

Yes, you can add raw steak to a slow cooker to cook it to your desired doneness level.

Is 4 hours on high the same as 8 hours on low in a slow cooker? ›

The difference between the two settings isn't a higher temperature, it's the time it takes for the slow cooker to reach the simmer point. On high, that's around three to four hours, and on low, it's seven to eight, according to Crock-Pot. So imagine if your dinner is cooking away on high all day while you're at work.

What happens if you put too much liquid in a slow cooker? ›

But adding too much liquid can dilute the flavors.

"Using too much liquid can result in a dish that tastes under-seasoned or looks very pale and unappealing," he said. To avoid a washed-out flavor, consider substituting vegetable or meat stock for water in savory dishes.

Does taking the lid off a slow cooker thicken the sauce? ›

Take the lid off

Place the cooker on a high setting, and open the lid for 30-45 minutes to let excess moisture cook off. The liquid will reduce, leaving you with a thick and delicious gravy or sauce. (Tip: This trick can also be applied for thickening stews, or when you've accidentally added too much liquid.)

How much liquid do I add to slow cooker? ›

How much liquid do I add? Water or liquid is necessary to create steam. When cooking meat or poultry, the water or liquid level should cover the ingredients to ensure effective heat transfer throughout the crock. Some manufacturers of slow cookers recommend adding liquid to fill the stoneware 1/2 to 3/4 full.

What is the difference between Mongolian and teriyaki? ›

True Teriyaki has Mirin and Sake in it and those two ingredients aren't in my Mongolian Beef recipe. That's like saying Ketchup is just co*cktail Sauce even though it needs horseradish to make it so.

What is Mongolian beef supposed to taste like? ›

When done just right, it's perfectly sweet and savory, slightly spicy, and loaded with lots of delicious aromatics such as ginger, garlic, green onions and even a few dried red chilis, all combined to bring a nice pop of deep, fragrant flavor.

What does Mongolian food taste like? ›

For instance, meat from the Gobi region has a distinct taste with hints of wild garlic, while meat from the steppe areas is known for its rich wild onion flavor.” These nuances are important as many Mongolian dishes contain just three basic elements: meat, wheat and salt. Spices and sauces don't play a big part.

What is Mongolian flavor? ›

Typically, Mongolian consists of hoisin sauce, chili peppers, soy sauce, scallions, cabbage, green onions, ginger, broccoli, and mushrooms. Mongolian has a much simpler taste than Szechuan.

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