As I walked into my kitchen this morning, the air was filled with the aromatic essence of garlic and ginger, transporting me to my favorite Asian bistro. It’s no surprise that on busy weeknights, I turn to my trusty Slow Cooker Mongolian Beef. This dish not only delights with its tender flank steak enveloped in a rich sweet-savory sauce, but it also makes meal prep a breeze. With just a few simple ingredients and minimal effort, you can create a hearty meal that’s perfect for those hectic evenings or to impress at a gathering. What’s even better? You can easily tailor it to fit your dietary needs, with gluten-free options available. Curious about how this crowd-pleaser comes together? Let’s dive into the recipe!

Why Is This Recipe a Must-Try?
Simplicity at its core: This Slow Cooker Mongolian Beef requires minimal prep and just a few ingredients, making it perfect for busy cooks. Flavor Explosion: The harmonious blend of garlic and ginger ensures every bite is packed with deliciousness, taking your taste buds on a delightful journey. Meal Prep Friendly: Great for making ahead and storing, it’s a fantastic choice for efficient weeknight dinners. Gluten-Free Option: Easily adapt this recipe for gluten-free diets without sacrificing flavor. Crowd-Pleasing: Whether serving family or guests, this dish will impress everyone at the table!
Slow Cooker Mongolian Beef Ingredients
For the Beef
• Flank Steak – The main protein that gives the dish its hearty goodness; can also use sirloin or chuck roast if desired.
For the Sauce
• Soy Sauce – The base of the sauce that provides umami flavor; try gluten-free soy sauce for a gluten-free option.
• Brown Sugar – Adds a touch of sweetness to balance the savory elements; substitute with honey or coconut sugar for a different twist.
• Garlic – Infuses the dish with aromatic flavor; fresh garlic is ideal, but garlic powder works in a pinch.
• Ginger – Offers warmth and spice to the sauce; fresh ginger is preferred, though ground ginger serves as a good substitute.
• Cornstarch – Thickens the sauce to perfection; can be omitted for a thinner sauce or swap for arrowroot for a gluten-free alternative.
For Garnish
• Green Onions – An optional finishing touch that adds freshness and color to your dish; sprinkle on top just before serving.
With these key ingredients, you’ll be well on your way to creating a delightful Slow Cooker Mongolian Beef that’s sure to become a favorite in your household!
Step‑by‑Step Instructions for Slow Cooker Mongolian Beef
Step 1: Prep the Beef
Begin by thinly slicing the flank steak against the grain, which will help tenderize the meat. Aim for uniform slices about 1/4 inch thick to ensure even cooking. Set your slow cooker aside and get ready to create a mouthwatering meal with the sliced beef as your base.
Step 2: Mix Sauce
In a mixing bowl, combine the soy sauce, brown sugar, minced garlic, ginger, and cornstarch. Whisk everything together until smooth and free of lumps. This savory-sweet sauce will coat your beef beautifully, so make sure it’s well mixed to enhance the flavors of the Slow Cooker Mongolian Beef.
Step 3: Combine Ingredients
Place the sliced beef into the slow cooker, making sure to spread it out evenly. Pour the prepared sauce over the beef, ensuring every slice is coated. Gently toss the beef using tongs or your hands until it’s well-saturated in the sauce, setting the stage for a delicious meal.
Step 4: Cook
Cover the slow cooker with its lid and set it to cook on low for 3 hours. As the beef cooks, the magic happens, transforming the meat into tender morsels infused with the fragrant sauce. Avoid opening the lid during this time to maintain an even cooking temperature, ensuring your Slow Cooker Mongolian Beef turns out perfectly.
Step 5: Serve
Once the cooking time is complete, check for tender beef pieces that are easily pulled apart with a fork. Serve your Slow Cooker Mongolian Beef over a bed of fluffy rice, noodles, or even in lettuce wraps for a lighter option. Garnish with fresh green onions for added flavor and a pop of color to your dish.

Storage Tips for Slow Cooker Mongolian Beef
Fridge: Store leftovers in an airtight container for up to 3-4 days to maintain freshness and flavor.
Freezer: For longer storage, freeze the Slow Cooker Mongolian Beef in freezer-safe containers for up to 2-3 months. Make sure to label the containers with the date for easy tracking.
Reheating: Reheat in the oven at 350°F covered with foil for even warming, or microwave in short intervals on medium power until heated through.
Serving: When serving, consider reheating with a splash of water to restore moisture for a delicious meal experience.
What to Serve with Slow Cooker Mongolian Beef?
Transform your dinner table into a delightful feast with perfect pairings that bring out the best in this savory dish.
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Fluffy Steamed Rice: A classic pairing that soaks up the rich sauce, ensuring every bite is satisfying and balanced. The subtle flavor of rice complements the boldness of the Mongolian Beef beautifully.
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Stir-Fried Vegetables: Colorful bell peppers, broccoli, and snap peas add crunch and freshness, enhancing the overall texture of your meal. This vibrant side is as nutritious as it is visually appealing!
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Garlic Noodles: Silky, garlic-infused noodles take your dining experience to a new level. Their buttery richness perfectly contrasts the sauce’s sweet-savory notes, making for a tempting combination.
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Crispy Lettuce Wraps: A light, fresh option that brings a crunchy element to your plate. Fold the tender beef and sauce into cool lettuce leaves for a fun, interactive meal!
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Miso Soup: This warm, comforting soup serves as a perfect starter. The umami flavor of miso enhances the Asian essence of the main dish while providing a soothing contrast.
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Chilled Cucumber Salad: Serve a refreshing salad of cucumbers dressed in rice vinegar. The crispness and acidity make a delightful balance to the richness of the Slow Cooker Mongolian Beef.
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Sweet Mango Chutney: Elevate your meal with a spoonful of mango chutney for a fruity twist. Its sweetness counters the savory spices, marrying flavors in an unexpected way.
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Green Tea: Light and fragrant, this tea clears the palate between bites, allowing you to fully enjoy each flavorful mouthful of your Mongolian Beef. It’s a soothing option that complements the meal seamlessly.
These thoughtful pairings will help you create a delightful dining experience, ensuring your Slow Cooker Mongolian Beef shines as the centerpiece of a beloved meal.
Slow Cooker Mongolian Beef Variations
Feel free to enhance this dish with your favorite twists and substitutions for an even more delightful experience!
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Add Veggies: Toss in bell peppers or snap peas during the last hour of cooking for added nutrition and color. This simple addition brightens the dish, turning the Slow Cooker Mongolian Beef into a vibrant, vegetable-packed meal.
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Spice It Up: Incorporate red pepper flakes or a splash of chili paste to bring heat and excitement into the mix. A spicy kick will elevate your taste buds and make the flavors truly sing.
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Dairy-Free: Substitute coconut aminos for soy sauce to create a dish that’s not only delicious but also dairy-free friendly. This swap keeps the savory profile while offering a slight sweetness that complements the beef.
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Sweetness Swap: Experiment with different sweeteners! Use honey or coconut sugar instead of brown sugar for a unique flavor profile. Each choice offers its own nuance and can change the whole vibe of your Slow Cooker Mongolian Beef.
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Texture Twist: For extra crunch, serve the dish topped with toasted sesame seeds. This adds delightful texture and a nutty flavor that contrasts nicely with the tender beef.
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Rice Alternatives: Serve with cauliflower rice for a low-carb version or switch it up with quinoa for added protein. Both options maintain the dish’s essence while accommodating various dietary preferences.
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Extra Umami: Enhance the sauce with a splash of fish sauce or Worcestershire sauce. Just a little will deepen the umami flavor, turning your beef into a standout star.
For more delightful recipes, check out our mouthwatering Ranch Beef Bowtie or indulge in a comforting bowl of Beef Bourguignon, both perfect for adding diversity to your meal planning!
Expert Tips for Slow Cooker Mongolian Beef
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Beef Selection: Choose flank steak for tenderness; it’s key to a perfect Slow Cooker Mongolian Beef. Avoid using too thick slices which can lead to uneven cooking.
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Sauce Consistency: Make sure to mix your sauce thoroughly to avoid clumps of cornstarch. This ensures a smooth, glossy finish that beautifully coats your beef.
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Timing is Key: Avoid lifting the lid while cooking. Each time you do, heat escapes, extending cooking time and risking chewy meat. Trust the slow cooker!
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Flavor Variations: Consider adding bell peppers or snap peas during the last hour of cooking for extra nutrition. This can elevate your Slow Cooker Mongolian Beef with vibrant colors and textures.
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Storage Wisdom: If you have leftovers, store them in an airtight container for up to 4 days. You can also freeze portions for up to 2-3 months, making it a great meal prep option!
Make Ahead Options
These Slow Cooker Mongolian Beef preparations are a lifesaver for busy home cooks looking to save time! You can slice the flank steak and prepare the sauce up to 24 hours in advance; simply combine soy sauce, brown sugar, minced garlic, ginger, and cornstarch for a smooth mix. Store the sliced beef and sauce separately in airtight containers in the refrigerator to maintain freshness and prevent any potential browning. When you’re ready to enjoy this delightful dish, just combine the beef and sauce in the slow cooker and cook on low for about 3 hours. You’ll have a restaurant-quality meal ready with minimal effort, perfect for those hectic weeknights!

Slow Cooker Mongolian Beef Recipe FAQs
What type of beef should I use for this recipe?
Absolutely! Flank steak is the best choice for its tenderness, making it a favorite for this Slow Cooker Mongolian Beef. If flank steak isn’t available, feel free to substitute with sirloin or chuck roast, but be mindful that cooking times may vary slightly.
How should I store leftover Slow Cooker Mongolian Beef?
After you’ve enjoyed your meal, the leftovers can be stored in an airtight container in the refrigerator for up to 3-4 days. This way, you can enjoy the delicious flavors again without any hassle! For longer-term storage, freeze it in freezer-safe containers for up to 2-3 months. Just remember to label them, so you won’t forget what’s inside!
Can I freeze Slow Cooker Mongolian Beef? If so, how?
Yes, you absolutely can freeze this dish! To do so, let the Slow Cooker Mongolian Beef cool completely after cooking. Then, portion it into airtight freezer-safe containers or freezer bags. Aim to remove as much air as possible to prevent freezer burn. When you’re ready to enjoy it again, simply thaw overnight in the refrigerator and reheat on the stovetop or in the microwave until warmed through.
What if my sauce is too thick or clumpy?
If you find your sauce is clumpy or thicker than desired, don’t worry! Just add a bit of water or low-sodium chicken broth to the slow cooker and stir gently until you reach your preferred consistency. Mixing it well while the dish is cooking will help to prevent clumps in the first place, so remember to whisk your sauce components thoroughly before cooking.
Can I make this recipe gluten-free?
Very easily! To adapt this Slow Cooker Mongolian Beef for gluten-free diets, simply replace regular soy sauce with a gluten-free soy sauce or tamari. Ensure that any additional ingredients, like cornstarch, are also labeled gluten-free. This way, you can enjoy all the flavors without the worry of gluten.
Are there any dietary considerations for pets with this recipe?
While the ingredients in Slow Cooker Mongolian Beef are delicious for humans, keep in mind that some components like soy sauce and garlic can be harmful to pets. It’s best to avoid sharing this dish with your furry friends. Stick to pet-friendly treats to keep them happy and safe!

Savory Slow Cooker Mongolian Beef for Effortless Dinners
Ingredients
Equipment
Method
- Begin by thinly slicing the flank steak against the grain, aiming for uniform slices about 1/4 inch thick.
- In a mixing bowl, combine the soy sauce, brown sugar, minced garlic, ginger, and cornstarch. Whisk everything together until smooth and free of lumps.
- Place the sliced beef into the slow cooker, spreading it out evenly. Pour the prepared sauce over the beef, ensuring every slice is coated.
- Cover the slow cooker with its lid and set it to cook on low for 3 hours. Avoid opening the lid during this time.
- Once cooking time is complete, check for tender beef pieces. Serve your Slow Cooker Mongolian Beef over rice, noodles, or in lettuce wraps, garnished with green onions.

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