Slow Cooker Mongolian Beef: A Flavorful, Hands-Free Dinner Solution
Looking for a hearty and flavorful dinner that’s easy to make? Slow Cooker Mongolian Beef is the perfect recipe for busy weeknights. Tender slices of beef are simmered in a rich, savory sauce infused with soy sauce, garlic, and ginger, creating a dish that’s both comforting and delicious. The slow cooker does all the work, allowing the flavors to meld beautifully while you focus on your day.
Simply prepare the ingredients in the morning, let the slow cooker work its magic, and come home to a meal that’s ready to enjoy. Serve it over fluffy rice or noodles for a complete dinner that’s sure to please the entire family.
Why You’ll Love Slow Cooker Mongolian Beef
- Quick and Easy: Minimal prep time and simple steps make this recipe accessible for cooks of all levels.
- Flavorful and Versatile: Packed with classic Mongolian flavors, this dish is easily customizable to suit your preferences.
- Time-Saving: The slow cooker allows you to enjoy hands-free cooking while you focus on other tasks.
- Budget-Friendly: Uses affordable cuts of beef, making it an economical yet satisfying meal.
Pro Tips for the Best Slow Cooker Mongolian Beef
- Choose the Right Beef: Opt for flank steak or sirloin for tender, flavorful results.
- Thicken the Sauce: Mix a slurry of cornstarch and water during the last 30 minutes of cooking for a thicker, glossy sauce.
- Add Veggies: Toss in broccoli, bell peppers, or carrots during the last hour of cooking for added color and nutrition.
- Adjust Sweetness: Balance the sweet and savory flavors by tweaking the amount of brown sugar to suit your taste.
Serving Suggestions
Slow Cooker Mongolian Beef pairs perfectly with:
- Steamed Rice: A classic base that soaks up the rich sauce.
- Noodles: Use lo mein or rice noodles for an Asian-inspired twist.
- Vegetables: Add sautéed or steamed broccoli, snap peas, or bok choy for a balanced meal.
- Sesame Seeds and Green Onions: Sprinkle these on top for a final touch of flavor and texture.
Elevate Your Weeknight Dinner
With its tender beef and savory sauce, Slow Cooker Mongolian Beef delivers restaurant-quality flavors with minimal effort. Perfect for busy schedules, this dish is a must-try for anyone seeking a convenient, satisfying, and budget-friendly meal. Add this recipe to your weekly rotation and watch it become a family favorite!

Ingredients for Slow Cooker Mongolian Beef
Here’s what you’ll need to create this flavorful dish:
- Flank Steak or Sirloin: Flank steak is preferred for its tenderness and rich flavor, but sirloin works well too. Slice thinly against the grain for the best texture.
- Soy Sauce: Use low-sodium soy sauce to balance the dish without overwhelming it with salt.
- Brown Sugar: Adds a touch of sweetness that complements the savory soy sauce beautifully.
- Garlic Cloves: Fresh minced garlic infuses the beef with aromatic richness; adjust the amount based on your taste.
- Ginger Root: Freshly grated ginger provides zest and warmth. Ground ginger can be used as a substitute if necessary.
- Green Onions: Chopped green onions add freshness and a hint of sharpness, making them an ideal garnish.
The full ingredients list, including exact measurements, is detailed in the recipe card below.
How to Make Slow Cooker Mongolian Beef
Follow these easy steps for a stress-free, delicious meal:
Step 1: Prepare the Meat
Slice the flank steak into thin strips against the grain. This ensures tenderness. Make sure the slices are similar in size for even cooking.
Step 2: Make the Sauce
In a mixing bowl, combine soy sauce, brown sugar, minced garlic, and grated ginger. Stir until the sugar is dissolved and the mixture is well blended.
Step 3: Add to the Slow Cooker
Place the sliced beef into the slow cooker. Pour the sauce mixture over the beef and toss gently to coat all the pieces evenly.
Step 4: Cook the Beef
Cover the slow cooker and set it to:
- Low Heat: Cook for 6-8 hours for maximum tenderness.
- High Heat: Cook for 3-4 hours if you’re short on time.
Step 5: Add Green Onions
About 30 minutes before serving, add the chopped green onions to the slow cooker. This step allows them to soften slightly while retaining their fresh flavor.
Step 6: Serve and Enjoy
Transfer the Mongolian beef to plates or bowls. Drizzle any remaining sauce from the slow cooker over the beef for added flavor.
Optional Toppings and Add-Ins
- Sprinkle with sesame seeds for a nutty finish.
- Add steamed broccoli or snow peas for a complete meal.
- Serve over a bed of steamed rice or noodles to soak up the rich sauce.
This Slow Cooker Mongolian Beef is easy to make, packed with flavor, and sure to become a family favorite!

Tips and Tricks for Slow Cooker Mongolian Beef
- Even Cooking: Slice the beef and any added vegetables into similar sizes to ensure consistent cooking.
- Temperature Control: Let beef and other ingredients come to room temperature before starting to help them cook evenly.
- Add Vegetables: Enhance the dish by adding vegetables like bell peppers, snap peas, or broccoli during the last hour of cooking for added texture and nutrition.
- Advanced Flavor Boost: For deeper flavor, marinate the beef overnight in the soy sauce mixture before adding it to the slow cooker.
How to Serve Slow Cooker Mongolian Beef
This Slow Cooker Mongolian Beef is versatile and pairs beautifully with a variety of sides:
- Steamed Rice or Mashed Potatoes: Perfect bases to soak up the rich, savory sauce.
- Fresh Salad: Adds a refreshing crunch and balances the dish’s richness.
- Crusty Bread: Great for sopping up every drop of the flavorful sauce.
- Steamed Vegetables: Add color, texture, and a healthy balance to your plate.
Feel free to customize your sides to suit your preferences for a truly personalized dining experience!

Make Ahead and Storage for Slow Cooker Mongolian Beef
- Make Ahead:
Prepare the beef marinade up to 24 hours in advance by mixing all ingredients and storing them in an airtight container in the refrigerator. Marinating the beef ahead of time allows the flavors to fully develop, resulting in a more flavorful dish. - Storing:
Store leftover Slow Cooker Mongolian Beef in an airtight container in the refrigerator for up to 3-4 days. For longer storage, freeze the beef in freezer-safe containers for up to 3 months. Make sure to label containers with the date for easy tracking. - Reheating:
To reheat, thaw frozen beef overnight in the refrigerator. Warm it gently on the stovetop over low heat, stirring occasionally, until heated through. Alternatively, microwave individual portions in short bursts, stirring frequently to ensure even heating.
FAQs for Slow Cooker Mongolian Beef
What ingredients do I need for Slow Cooker Mongolian Beef?
To make this dish, you’ll need:
- Flank Steak: Sliced thinly against the grain for maximum tenderness.
- Soy Sauce: For savory umami flavor.
- Brown Sugar: Adds a subtle sweetness to balance the savory sauce.
- Garlic and Ginger: Provide aromatic and zesty flavors.
- Green Onions and Sesame Seeds: For garnishing and extra flavor.
Optional ingredients include cornstarch to thicken the sauce and vegetables like broccoli or snap peas for added nutrition.
How long does it take to cook it?
Cooking Slow Cooker Mongolian Beef typically takes:
- 4-5 hours on low or
- 2-3 hours on high in your slow cooker.
The longer cooking time on low heat allows the beef to become tender and absorb the rich flavors of the sauce. Check for doneness at the minimum cooking time to ensure the beef is fork-tender without overcooking.
Can I use other cuts of meat for this recipe?
Yes! While flank steak is the traditional choice, you can substitute other cuts like:
- Sirloin or Round Steak: These work well and offer similar textures.
- Chuck Roast: A budget-friendly option that may require additional cooking time for tenderness.
Each cut has its own characteristics, so monitor cooking times to achieve the best results.
What side dishes pair well with this recipe?
Pair Slow Cooker Mongolian Beef with:
- Steamed Jasmine or White Rice: To soak up the savory sauce.
- Fried Rice: For added flavor and texture.
- Steamed or Sautéed Vegetables: Options like broccoli, snap peas, or bok choy add crunch and nutrition.
- Fresh Green Salad: Lightly dressed in sesame oil for a refreshing contrast.
How can I store leftovers?
- Refrigerator: Allow leftovers to cool before transferring to an airtight container. They will keep in the fridge for 3-4 days.
- Freezer: Store in freezer-safe bags or containers for up to 3 months.
- Reheating: Thaw overnight in the fridge if frozen, then reheat gently on the stovetop or in the microwave until warmed through.
Is it suitable for meal prep?
Absolutely! Slow Cooker Mongolian Beef is perfect for meal prep.
- Cook a large batch and divide it into individual portions.
- Pair with rice or vegetables and store in airtight containers.
- These pre-portioned meals can be refrigerated for up to 4 days or frozen for up to 3 months, offering a quick and nutritious option throughout the week.

Conclusion
Slow Cooker Mongolian Beef is a perfect blend of simplicity and flavor, making it an excellent choice for both weeknight dinners and special gatherings. With tender beef, a rich sauce made from soy sauce, garlic, and ginger, and the convenience of slow cooking, this recipe delivers an Asian-inspired dish that anyone can master.
Customizable options like using different cuts of meat or pairing it with rice, vegetables, or noodles add versatility, allowing you to tailor the dish to your taste. Its ease of preparation, along with meal prep and storage options, ensures that this savory delight can easily become a staple in your weekly meal rotation.
Experience the joy of creating restaurant-quality flavors at home with Slow Cooker Mongolian Beef—a dish that’s guaranteed to impress and satisfy!