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!

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

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

What is Mongolian beef sauce made of? ›

You will need soy sauce, oyster sauce, garlic, sugar, and green onion for the delicious restaurant-quality glaze in Mongolian Beef. A good quality soy sauce and oyster sauce make a massive difference in any dish; I recommend using Lee Kum Kee for both of these condiments.

How to thicken stock in a slow cooker? ›

Add a slurry at the end.

A slurry is a mixture of flour and water, whisked together until smooth and added towards the end of cooking; it's a super-simple way to thicken any soup. For slow cooker soups, add your slurry with at least 30 minutes of cook time left so that the raw flour can cook and thicken the soup.

What to pair with Mongolian beef? ›

What to serve with Mongolian Beef
  1. Rice.
  2. Din Tai Fung Green Beans.
  3. Din Tai Fung Cucumber Salad.
  4. Cauliflower Fried Rice.
  5. Bacon Fried Rice with Shallots.
  6. Instant Pot Fried Rice.
  7. Asian Cucumber Salad with Toasted Rice Powder.
  8. Ginger Veggie Stir Fry.
Apr 24, 2024

How to thicken sauce with cornstarch in a slow cooker? ›

A cornstarch slurry is a mixture of a cold liquid with cornstarch. It is used as a thickening agent, and is particularly common in Asian sauces. 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.

Does Mongolian beef contain hoisin sauce? ›

Directions. Whisk together soy sauce, hoisin sauce, sesame oil, sugar, garlic, and red pepper flakes in a large bowl. Toss beef with marinade; cover the bowl and refrigerate for 1 hour to overnight.

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.

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 to stop a slow cooker from being watery? ›

okay, secondly, you can put a tea towel under the lid. that will capture some of the moisture, it stops it circulating in the slow cooker. and then thirdly, you can use a corn flour slurry, so into a bowl, a little bit of corn flour, cold water, mix it with your finger, pour it in, stir it. you're done.

When to add cornstarch to a slow cooker? ›

You can also add cornstarch dissolved in water (1 or 2 tablespoons cornstarch to 2 or 3 tablespoons cold water, depending on how much liquid you have) directly to the slow cooker near the end of cooking to thicken the liquids.

Why is Mongolian beef so tender? ›

This is the KEY ingredient to super tender beef. Baking soda is commonly used in Chinese cooking to tenderize beef. If you're curious about the science behind it – baking soda neutralizes acid and raises the pH level, which causes the meat to become more alkaline.

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's better Mongolian beef or Szechuan 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.

Why is my sauce watery in the slow cooker? ›

This moist environment allows you to leave food to cook for hours without risking it drying out. But because there is no evaporation, the liquid isn't able to reduce and thicken naturally in a slow cooker, often resulting in watery sauces and loose gravies.

What can I use instead of cornstarch in slow cooker? ›

6 Cornstarch Substitutes for All Your Cooking and Baking Needs
  1. Potato Starch. Potato starch is the cornstarch substitute favorite of associate food editor Kendra Vaculin. ...
  2. Rice Flour. ...
  3. All-Purpose Flour. ...
  4. Tapioca Flour. ...
  5. Arrowroot Powder. ...
  6. Xanthan Gum.
Jun 13, 2022

Why didn't my sauce thicken with cornstarch? ›

Something to remember when you're using cornstarch: If your sauce is quite acidic (like maybe it's tomato-based), the acid will cause cornstarch to lose some of its effectiveness as a thickener. In that case, you can substitute arrowroot or tapioca starch.

What is Mongolian sauce? ›

Mongolian sauce is a sweet and savory sauce that is often used in Chinese-American cuisine, particularly in dishes like Mongolian Beef or Mongolian Chicken.

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 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.

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