Slow Cooker Mongolian Beef is a delightful dish that brings the flavors of Asian cuisine into your kitchen. This recipe is perfect for various occasions, whether it’s a casual weeknight dinner or a special gathering with friends. The standout qualities of this dish include its tender beef, aromatic seasonings, and the sweet-savory sauce that makes it irresistible. With minimal effort required, you can enjoy restaurant-quality flavors right at home.
Why You’ll Love This Recipe
- Easy to Prepare: Simply toss ingredients into the slow cooker and let it do the work for you.
- Flavor-Packed: Infused with garlic, ginger, and soy sauce, each bite bursts with authentic taste.
- Versatile Serving Options: Serve it over rice, noodles, or in lettuce wraps for a fun twist.
- Family-Friendly: A sure hit with both kids and adults, making mealtime enjoyable for everyone.
- Meal Prep Friendly: Perfect for making ahead of time; just reheat and serve when ready.
Tools and Preparation
Before diving into the cooking process, gather your tools to ensure a smooth experience. Having everything ready will make prep quick and easy.
Essential Tools and Equipment
- Slow cooker
- Mixing bowl
- Cutting board
- Sharp knife
- Measuring cups and spoons
Importance of Each Tool
- Slow cooker: Allows for hands-off cooking while ensuring the beef becomes tender and flavorful.
- Mixing bowl: Perfect for coating the steak evenly with cornstarch before cooking.
- Sharp knife: Essential for thinly slicing the flank steak against the grain for maximum tenderness.

Ingredients
For the Beef
- 1 1/2 pounds flank steak (thinly sliced against the grain)
- 1/4 cup cornstarch
For the Sauce
- 1 tablespoon toasted sesame oil
- 1 teaspoon minced garlic
- 1 teaspoon minced ginger
- 1/2 cup low sodium soy sauce
- 1/3 cup brown sugar
- 1/2 cup water
For Garnish
- 1/2 cup green onions (for garnish)
How to Make Slow Cooker Mongolian Beef
Step 1: Coat the Steak
Toss the flank steak with cornstarch in a mixing bowl until evenly coated. This step helps to create a nice texture once cooked.
Step 2: Combine Ingredients in Slow Cooker
Place the coated steak in a slow cooker and add:
* toasted sesame oil
* minced garlic
* minced ginger
* low sodium soy sauce
* brown sugar
* water
Stir gently to combine all ingredients.
Step 3: Cook the Beef
Cover and cook on HIGH for 2-3 hours or LOW for 4-5 hours until beef is tender. The slow cooking process allows flavors to meld beautifully.
Step 4: Finish and Serve
Stir in green onions just before serving to add freshness. Enjoy your Slow Cooker Mongolian Beef over rice or noodles!
How to Serve Slow Cooker Mongolian Beef
Slow Cooker Mongolian Beef is a versatile dish that can be enjoyed in various ways. Whether you’re hosting a dinner party or just enjoying a family meal, these serving suggestions will elevate your dining experience.
Over Rice
- Serve the beef over steamed white or brown rice for a hearty base that absorbs the rich sauce.
In Noodle Bowls
- Toss the Mongolian beef with cooked rice noodles or udon for a comforting noodle bowl. Add veggies for extra crunch.
Lettuce Wraps
- Spoon the beef mixture into crisp lettuce leaves for a fresh and light alternative. This adds a delightful crunch with each bite.
On a Bed of Vegetables
- Use sautéed or steamed vegetables as a base for the beef. Broccoli, bell peppers, and snap peas are excellent choices.
With Sesame Seeds
- Sprinkle toasted sesame seeds over the finished dish to add texture and a nutty flavor that complements the dish well.
Garnished with Green Onions
- Fresh green onions not only enhance the presentation but also add freshness and flavor when sprinkled on top just before serving.
How to Perfect Slow Cooker Mongolian Beef
Achieving perfect Slow Cooker Mongolian Beef is easy with a few helpful tips. Follow these suggestions to enhance flavor and tenderness.
- Use high-quality flank steak – Opt for fresh cuts to ensure tenderness and robust flavor in your dish.
- Adjust sweetness to taste – Modify the amount of brown sugar based on your personal preference for sweetness.
- Let it rest before serving – Allowing the beef to sit for a few minutes after cooking helps redistribute juices, making it even more flavorful.
- Add vegetables – Incorporate bell peppers or snap peas during the last hour of cooking for added color and nutrition.
- Thicken the sauce if desired – If you prefer a thicker sauce, mix 1 tablespoon of cornstarch with water, then stir it in during the last 30 minutes of cooking.
- Serve hot – Make sure to serve this dish immediately after cooking while it’s hot and fresh for optimal taste.
Best Side Dishes for Slow Cooker Mongolian Beef
Pairing side dishes with Slow Cooker Mongolian Beef can create a well-rounded meal. Here are some great options to consider:
- Steamed Jasmine Rice – Light and fragrant rice that pairs beautifully with savory flavors.
- Stir-Fried Vegetables – A colorful mix of broccoli, carrots, and bell peppers sautéed in garlic adds crunch and nutrition.
- Egg Fried Rice – Leftover rice tossed with eggs and peas makes an excellent accompaniment full of flavor.
- Cucumber Salad – A refreshing salad made with sliced cucumbers, vinegar, and sesame oil offers a crisp contrast.
- Garlic Noodles – Soft noodles tossed in garlic butter provide richness alongside the savory beef.
- Edamame Beans – Steamed edamame sprinkled with sea salt offers protein-packed bites that complement the main dish.
- Asian Slaw – Shredded cabbage mixed with carrots, dressed in a tangy vinaigrette creates a crunchy side that’s bursting with flavor.
- Sautéed Bok Choy – Lightly sautéed bok choy seasoned with soy sauce brings an earthy depth that harmonizes well with Mongolian beef.
Common Mistakes to Avoid
It’s easy to make mistakes when preparing Slow Cooker Mongolian Beef. Here are some common pitfalls and how to avoid them.
- Using the wrong cut of beef: Selecting a tough cut instead of flank steak can result in chewy meat. Always use flank steak for the best tenderness and flavor.
- Not coating the beef properly: Skipping the cornstarch step can lead to a watery sauce. Make sure to coat the steak evenly for a thicker sauce.
- Overcooking or undercooking: Cooking the beef for too long or too short can affect texture. Follow the recommended cooking times closely for optimal results.
- Ignoring ingredient measurements: Not using precise amounts, especially for soy sauce and brown sugar, can alter the dish’s balance. Measure ingredients carefully for consistent flavor.
- Forgetting to garnish: Neglecting green onions can take away from presentation and taste. Always sprinkle them on just before serving for added freshness.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container.
- It will last up to 3-4 days in the refrigerator.
Freezing Slow Cooker Mongolian Beef
- Allow it to cool completely before freezing.
- Store in freezer-safe bags or containers for up to 3 months.
Reheating Slow Cooker Mongolian Beef
- Oven: Preheat to 350°F (175°C) and heat covered for about 20 minutes.
- Microwave: Heat in a microwave-safe dish, covered, stirring halfway through until hot.
- Stovetop: Warm over medium heat in a skillet, stirring often until heated through.
Frequently Asked Questions
Here are some frequently asked questions regarding Slow Cooker Mongolian Beef.
How do I make Slow Cooker Mongolian Beef spicier?
You can add red pepper flakes or sliced chili peppers during cooking. Adjust according to your heat preference.
Can I use other meats instead of beef?
Yes! Chicken or turkey can be used as alternatives, but adjust cooking times accordingly for tenderness.
What should I serve with Slow Cooker Mongolian Beef?
This dish pairs well with steamed rice or noodles. You could also serve it with stir-fried vegetables for a complete meal.
Can I prepare Slow Cooker Mongolian Beef ahead of time?
Absolutely! You can prep the ingredients and store them in the fridge overnight before cooking the next day.
How do I thicken the sauce if needed?
If you prefer a thicker sauce, mix a tablespoon of cornstarch with water and stir it into the slow cooker during the last hour of cooking.
Final Thoughts
Slow Cooker Mongolian Beef is a delightful dish that offers rich flavors with minimal effort. It’s perfect for busy weeknights or special occasions, allowing you to create a restaurant-quality meal at home. Feel free to customize it by adding your favorite vegetables or adjusting sweetness levels. Try this recipe today!
Slow Cooker Mongolian Beef
Slow Cooker Mongolian Beef is a delicious dish that brings the vibrant flavors of Asian cuisine into your home with minimal effort. This recipe features tender flank steak coated in a sweet-savory sauce made from garlic, ginger, and low-sodium soy sauce, making it a perfect choice for busy weeknights or special gatherings. The slow cooker does all the work, ensuring the beef becomes wonderfully tender while infusing it with aromatic seasonings. Serve it over rice, noodles, or in crisp lettuce wraps for a delightful twist. Enjoy restaurant-quality flavors without leaving your kitchen.
- Prep Time: 15 minutes
- Cook Time: High for 2-3 hours or Low for 4-5 hours
- Total Time: 0 hours
- Yield: Serves approximately 4 people 1x
- Category: Dinner
- Method: Slow Cooking
- Cuisine: Asian
Ingredients
- 1 1/2 pounds flank steak (thinly sliced)
- 1/4 cup cornstarch
- 1 tablespoon toasted sesame oil
- 1 teaspoon minced garlic
- 1 teaspoon minced ginger
- 1/2 cup low sodium soy sauce
- 1/3 cup brown sugar
- 1/2 cup water
- Green onions (for garnish)
Instructions
- Coat flank steak with cornstarch in a mixing bowl.
- Place the coated steak in a slow cooker and add sesame oil, garlic, ginger, soy sauce, brown sugar, and water. Stir to combine.
- Cover and cook on HIGH for 2-3 hours or LOW for 4-5 hours until tender.
- Stir in green onions just before serving. Serve over rice or noodles.
Nutrition
- Serving Size: 1 cup (240g)
- Calories: 360
- Sugar: 18g
- Sodium: 580mg
- Fat: 12g
- Saturated Fat: 3g
- Unsaturated Fat: 9g
- Trans Fat: 0g
- Carbohydrates: 36g
- Fiber: 0g
- Protein: 28g
- Cholesterol: 80mg




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