Slow Cooker Mongolian Beef: An Incredible Ultimate Recipe for Any Occasion

Emma Johnson

Created by

Emma Johnson

Last updated on 2025-10-10T22:29:38.686Z

Slow Cooker Mongolian Beef is a stunning dish that will elevate your dinner table and impress your guests. This wonderful recipe features tender beef, coated in a rich, sweet, and savory sauce that is simply addictive. The best part? You can prepare it with minimal effort using your trusty slow cooker! With its delightful flavors and convenient cooking method, this dish stands out as a perfect option for busy weeknights or special gatherings alike.

You'll love how easy it is to make Slow Cooker Mongolian Beef. Just toss your ingredients into the slow cooker, set it to cook, and let it work its magic. Imagine coming home to a warming dinner that's ready to enjoy without the stress of traditional cooking. The marriage of flavors will have everyone asking for seconds, making your meal unforgettable.

In this article, we’ll explore the reasons why this recipe is a must-try, the preparation and cooking times involved, a comprehensive list of ingredients, easy-to-follow step-by-step cooking instructions, and the best ways to serve this incredible dish. Whether you are a seasoned chef or a novice in the kitchen, you’ll find that making Slow Cooker Mongolian Beef is not only achievable but also tremendously rewarding!

Why You’ll Love This Recipe

Slow Cooker Mongolian Beef is not just another ordinary beef dish; it’s an experience! Here are several reasons why you'll fall head over heels for this recipe:

  1. Effortless Preparation: Most of the work is done in the slow cooker, giving you time to tackle other tasks or enjoy some downtime.
  1. Delicious Flavor Profile: The combination of soy sauce, ginger, garlic, and brown sugar creates a unique balance of sweet and savory that will tantalize your taste buds.
  1. Tender and Juicy Beef: Cooking it slowly allows the beef to absorb the flavors and moisture, resulting in an incredibly tender and juicy final dish.
  1. Great for Meal Prep: This recipe is perfect for batch cooking, making it easy to prepare meals for the whole week or freeze leftovers.
  1. Family-Friendly: The sweet flavors appeal to both adults and kids, making it a great choice for families.
  1. Versatile Serving Options: Serve it over rice, noodles, or with a side of vegetables to create a delightful meal tailored to everyone’s preferences.

With these points in mind, it’s easy to see why Slow Cooker Mongolian Beef has garnered immense popularity!

Preparation and Cooking Time

When it comes to making Slow Cooker Mongolian Beef, the timing is key to ensuring rich flavors and tender meat. Here’s a breakdown of what to expect in terms of preparation and cooking:

  • Preparation Time: 15 minutes
  • Cooking Time: 4 to 6 hours on low or 2 to 3 hours on high
  • Total Time: Approximately 4 hours and 15 minutes (or up to 6 hours if cooking on low)

These times may vary depending on your slow cooker, but this framework should help you plan your meal effectively!

Ingredients

  • 1.5 pounds flank steak, sliced against the grain
  • 1/2 cup soy sauce
  • 1/3 cup brown sugar
  • 1/4 cup water
  • 1 tablespoon minced garlic
  • 1 tablespoon minced ginger
  • 1/4 teaspoon red pepper flakes (optional, for heat)
  • 1 tablespoon cornstarch
  • 2 tablespoons vegetable oil
  • 2–3 green onions, sliced for garnish
  • Cooked rice or noodles, for serving

Step-by-Step Instructions

Creating Slow Cooker Mongolian Beef is a breeze if you follow these straightforward steps:

  1. Prepare the Flank Steak: Slice the flank steak against the grain into thin strips to ensure tenderness.
  1. Mix the Sauce: In a bowl, whisk together the soy sauce, brown sugar, water, minced garlic, and minced ginger until well combined.
  1. Sear the Beef: Heat vegetable oil in a skillet over medium-high heat. Quickly sear the beef strips for about 2-3 minutes until browned. (This step is optional but adds depth of flavor.)
  1. Combine Ingredients in the Slow Cooker: Transfer the seared beef to the slow cooker. Pour the sauce mixture over the beef, making sure all pieces are well-coated.
  1. Add Seasoning: If you enjoy a little heat, sprinkle the red pepper flakes over the beef.
  1. Cook: Cover the slow cooker and set it to cook. Choose either low for 4 to 6 hours or high for 2 to 3 hours. The cooking time will depend on your schedule.
  1. Thicken the Sauce: About 30 minutes before serving, mix cornstarch with a little water to create a slurry. Stir this into the slow cooker to thicken the sauce.
  1. Serve: When done, taste and adjust seasoning if necessary before serving over rice or noodles.

With these steps, you’ll be well on your way to creating this mouthwatering dish without any fuss!

How to Serve

When it comes to serving Slow Cooker Mongolian Beef, presentation and accompaniments can elevate your dining experience. Here are some suggestions:

  1. Serve with Rice: A bowl of steamed jasmine or white rice makes an excellent base. The rice absorbs the flavorful sauce beautifully.
  1. Add Noodles: For a heartier dish, toss the beef with some cooked noodles, such as lo mein or rice noodles, for added texture.
  1. Garnish: Top with sliced green onions for a pop of color and freshness. Consider adding sesame seeds for an extra crunch.
  1. Side Dishes: Pair the meal with some steamed vegetables, like broccoli or green beans, for a balanced plate.
  1. Family Style: Consider serving everything on a large platter, allowing guests to help themselves.

By thoughtfully preparing to serve Slow Cooker Mongolian Beef, you ensure your meal is not only delicious but visually appealing too!

Additional Tips

  • Use Fresh Ingredients: Fresh garlic and ginger can significantly enhance the flavor of your sauce. Always opt for fresh over pre-minced options when possible.
  • Adjust the Sweetness: If you prefer a less sweet dish, reduce the amount of brown sugar slightly. You can always add more if needed later on.
  • Add Vegetables: To make this dish more nutritious, consider adding vegetables like bell peppers or snap peas right into the slow cooker during the last hour of cooking.
  • Garnish Creatively: While green onions are a classic garnish, try adding chopped cilantro or crushed peanuts for a unique twist.
  • Taste and Adjust: Always remember to taste your sauce before serving and adjust any seasoning. More soy sauce can add depth, while more sugar can balance out acidity.

Recipe Variation

Feel free to customize your Slow Cooker Mongolian Beef with these variations:

  1. Spicy Mongolian Beef: Enhance the heat by adding sliced jalapeños or a tablespoon of sriracha sauce to the sauce mixture before cooking.
  2. Mongolian Chicken: Substitute chicken thighs or breasts for beef for a lighter version of this dish.
  3. Beef and Broccoli: Add washed broccoli florets about 30 minutes before the cooking ends. This steams the broccoli perfectly and adds a delightful color and flavor.
  4. Vegetarian Version: For a vegetarian twist, replace the beef with tofu. A firm variety works best and can absorb the flavors well.

Freezing and Storage

  • Storage: Store leftover Slow Cooker Mongolian Beef in an airtight container in the refrigerator for up to 4 days.
  • Freezing: You can freeze Mongolian Beef for up to 3 months. Cool the beef completely, portion it into freezer bags, and label each bag with the date.
  • Reheating: Thaw overnight in the refrigerator before reheating. Reheat gently on the stove or in the microwave until warmed through.

Special Equipment

Here’s a list of equipment you'll need to make your Slow Cooker Mongolian Beef:

  • Slow Cooker: A good-quality slow cooker is essential for evenly cooking the beef over an extended period.
  • Skillet: For searing the beef before adding it to the slow cooker, which enhances the flavors.
  • Cutting Board and Knife: To slice the flank steak and veggies with ease.
  • Whisk: For mixing the sauce ingredients thoroughly.
  • Serving Spoon: To serve the delicious beef over rice or noodles.

Frequently Asked Questions

Can I use another cut of beef?

Yes, while flank steak works well, cuts like sirloin or tri-tip also work. Just be prepared that cook times may vary slightly.

Can I double the recipe?

Absolutely! Just ensure your slow cooker can accommodate the extra ingredients. You may need to adjust the cooking time slightly.

What if I do not have a slow cooker?

You can make this recipe in a traditional pot on the stove, simmering on low heat for several hours, just be sure to monitor it closely and stir occasionally.

Is Mongolian Beef gluten-free?

To make it gluten-free, use tamari or a gluten-free soy sauce alternative.

Can I prepare this dish in advance?

Yes! You can prep all ingredients and store them in the slow cooker insert in the fridge overnight. Just place it in the slow cooker and set it to cook in the morning.

Conclusion

Slow Cooker Mongolian Beef is not just a meal; it's a celebration of flavors that brings families and friends together. With its rich, mouthwatering sauce and tender beef, this dish is bound to become a new favorite in your household. Whether you're serving it for a casual dinner or a festive gathering, your guests will relish every bite. Don't forget to explore all the serving options and variations to keep your dining experience fresh and exciting!