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

Chuck steak: Chuck steak is a budget-friendly cut of beef that's often used for slow cooking, but it can also be used as a substitute for flank steak in some recipes. It's a bit tougher than flank steak, so it's best to marinate it before cooking to help tenderize it.

What makes Mongolian beef Mongolian? ›

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 brown ground beef before slow cooker? ›

"Browning, or caramelizing, meat before putting it into a slow cooker isn't 100 percent necessary, but it is well worth the effort for the most flavorful and full-bodied end result," he says. "The caramelized surface of the meat will lend rich flavor and color to the finished dish."

Why is my beef still tough after 8 hours in a 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.

How do I make sure my beef is tender in a slow cooker? ›

Simply add the meat to your slow cooker with aromatics, stock and sauces and cook either on High for 4-5 hours or on Low for 5-8 hours. How do you make meat tender in a slow cooker? Choosing a cut of beef best suited for low and slow cooking is the ideal way to get extra tender meat.

What is the difference between Hunan beef and Mongolian Beef? ›

Hunan beef also packs in some heat in the form of chili peppers, but it's not a numbing heat whatsoever and I like to think of it as the milder cousin to Szeuchuan beef. What's the difference between Hunan beef vs Mongolian beef? Another favorite beef recipe of mine, Mongolian beef is much sweeter than Hunan beef.

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 a good side dish with Mongolian Beef? ›

Rice is one of those classic easy side dishes that go perfectly with Mongolian Beef. When you order this dish in a restaurant or for take-out, it's almost always paired with white steamed rice. I like to mix things up a bit and serve wild rice instead of white rice. It's healthier for you and gives a nice texture.

Can you overcook ground beef in a slow cooker? ›

Can you overcook beef in a slow cooker? Absolutely, which is why you should always adjust times and amounts as needed. Smaller amounts of slow cooker hamburger only need a few hours before they are done.

Can I put raw beef straight into a slow cooker? ›

Yes, you most certainly can cook raw meat in the slow cooker! You put it in “cold”, with whatever liquid your recipe calls for, turn it on either “low” or “high” depending on your recipe (I usually start it on “high” for a couple hours, then turn it to “low”), and in 6–7–8 hours, it's now COOKED meat!

Can you put uncooked ground beef in a crockpot? ›

Can You Put Raw Beef in a Slow Cooker? Yes, you can totally cook raw beef in a slow cooker. Many slow-cooker chili recipes have a step for browning the beef before it goes into the Crock-Pot. While this step isn't necessary, caramelizing the meat creates richer, bolder flavors.

What to do if beef is tough after cooking? ›

Simmering in a little bit of liquid or broth is a great way to tenderize. Acidity can also be your friend here. A little bit of vinegar and lemon juice in the liquid can help you tenderize the meat. It adds moisture, but it also cooks the meat.

Does slow cooking beef longer make it more tender? ›

It also makes the meat far more flavorful. Moreover, the slow-and-low method ensures you get that fall-off-the-bone tender meat. The same results just aren't achieved when cooking meat on high heat for a shorter period of time.

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

Don't overcook it. Simmer, don't boil. It starts out tough but long slow cooking will melt the connective tissue. If you cook past the time when the connective tissue is melted, you boil out all the water in the meat and it becomes tough again, like a well-done steak.

Can you overcook beef in a slow cooker? ›

Can you overcook a roast in a slow cooker? Sure. If the heat is too high or you leave it in way long the liquid will evaporate and you will end up with a chunk of shoe leather. It won't burn but it will turn into an inedible brick.

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