What’s the secret to bringing the flavors of Asia right into your kitchen? A trusty slow cooker and this recipe for Slow Cooker Mongolian Beef! Tender slices of flank steak become a savory masterpiece as they soak up aromatic garlic, zesty ginger, and a perfectly balanced sweet-savory sauce. The best part? It’s incredibly easy to prepare, making it perfect for busy weeknights or impressing guests without spending hours in the kitchen. Plus, this dish is ideal for meal prep—cook once and enjoy a comforting, hearty meal multiple times throughout the week. Are you ready to dive into this culinary journey with me? Let’s explore how to create this restaurant-quality favorite at home!

Why is Slow Cooker Mongolian Beef a Must-Try?

Simplicity at its finest: Just toss your ingredients into the slow cooker and let it work its magic. No complicated techniques needed!

Rich, Delectable Flavor: The combination of flank steak, garlic, and ginger enveloped in a sweet-savory sauce gives this dish an irresistible taste that rivals your favorite takeout.

Perfect for Meal Prep: Make a big batch to savor throughout the week. Try it with rice, noodles, or even in lettuce wraps for a delightful twist.

Versatile Substitutions: Prefer a different cut of beef? Switch to sirloin or chuck roast easily. You can also add vegetables like bell peppers for extra nutrition!

Gluten-Free Option: Want to cater to dietary needs? This recipe can be adapted for gluten-free diets simply by using the right soy sauce.

Don’t forget to check out my Beef Pasta Protein or Ground Beef Enchiladas for more delicious meal ideas!

Slow Cooker Mongolian Beef Ingredients

For the Beef
• Flank Steak – This cut provides tenderness and heartiness; you can substitute with sirloin or chuck roast, sliced thinly for best results.

For the Sauce
• Soy Sauce – Adds that essential umami flavor; to make this gluten-free, simply use gluten-free soy sauce.
• Brown Sugar – Contributes sweetness and caramel notes; adjust the amount for personal preference on sweetness.
• Garlic – Essential for enhancing the overall flavor profile; fresh garlic is recommended for a punchy taste over powder.
• Ginger – Offers a warm spice that deepens flavor; fresh ginger is preferred, but ground ginger can be a viable substitute in a pinch.
• Cornstarch – This acts as a thickening agent for the sauce; it can be omitted for a lighter sauce consistency if desired.
• Beef Broth – Provides moisture and intensifies the beef’s flavor; feel free to use homemade or store-bought broth based on convenience.

With these ingredients, you’re just moments away from enjoying a mouthwatering slow cooker Mongolian beef dinner that’s perfect any day of the week! Get ready to amaze your family with this rich and savory dish!

Step‑by‑Step Instructions for Slow Cooker Mongolian Beef

Step 1: Slice the Beef
Begin by slicing the flank steak into thin strips against the grain to maximize tenderness. Aim for even pieces, about ¼-inch thick, to ensure they cook uniformly. This step sets the foundation for your Slow Cooker Mongolian Beef, so take your time to make clean cuts.

Step 2: Prepare the Sauce
In a mixing bowl, combine soy sauce, brown sugar, minced garlic, and grated ginger, mixing until well blended. Add cornstarch to the mixture and stir until completely dissolved, ensuring the sauce is smooth. This flavorful sauce will envelop the beef during cooking, creating that rich taste synonymous with Mongolian cuisine.

Step 3: Combine in Slow Cooker
Transfer the sliced flank steak into the slow cooker. Pour the prepared sauce evenly over the beef, then gently stir to coat all the pieces well. This ensures every bite of your Slow Cooker Mongolian Beef will be deliciously infused with that sweet and savory sauce.

Step 4: Set the Cooking Settings
Cover the slow cooker with its lid and set it to cook on low for 6-8 hours or on high for 3-4 hours. Cooking on low is recommended for a more tender result, allowing the flavors to meld beautifully. Resist the temptation to lift the lid; keeping it closed ensures even heat distribution.

Step 5: Check for Doneness
About 30 minutes before serving, check the beef’s doneness. It should be very tender and easily shred with a fork. If it isn’t quite there, give it a little more time on the low setting. The goal is to achieve melt-in-your-mouth pieces that are perfectly coated with the sauce.

Step 6: Serve the Dish
Once the Slow Cooker Mongolian Beef is ready, remove the lid and stir gently. Serve it over steamed rice, noodles, or in fresh lettuce wraps for a delightful presentation. The dish’s glossy sauce and tender beef should be inviting, beckoning your family to dig in and enjoy the rich flavors you’ve created.

Slow Cooker Mongolian Beef Variations

Feel free to add your personal touch to this dish and make it uniquely yours—your taste buds will thank you!

Cut of Beef: Swap flank steak for sirloin or chuck roast, making sure to adjust cooking times slightly.
Vegetable Boost: Add colorful veggies like bell peppers, broccoli, or snap peas during cooking for added nutrition and texture.
Sweetness Adjustments: Alter the amount of brown sugar based on your sweetness preference; start small and adjust as needed.
Spicy Twist: Enhance the heat level by incorporating red pepper flakes or chili paste into the sauce for a fiery kick.
Low-Carb Option: Serve over cauliflower rice or quinoa instead of traditional rice or noodles for a healthier twist. It’s a great way to enjoy the dish without the carbs!
Flavor Infusion: Toss in some sesame oil or a splash of rice vinegar to elevate the depth of flavor—each will add a lovely balance to the dish.
Herbal Touch: For a fresh finish, sprinkle chopped green onions or cilantro on top before serving, bringing a burst of color and flavor.

For more mouthwatering beef recipes, don’t miss my Thai Basil Beef or the comforting Ground Beef Enchiladas that are sure to become family favorites!

What to Serve with Slow Cooker Mongolian Beef

Create a complete meal that elevates your Slow Cooker Mongolian Beef to new heights of comfort and deliciousness.

Steamed Jasmine Rice: A classic pairing, the fluffy rice soaks up the savory sauce, balancing the rich flavors beautifully.
Garlic Bok Choy: Simple yet flavorful, sautéed bok choy with garlic adds a fresh, crunchy element that complements the tender beef perfectly.
Crispy Vegetable Spring Rolls: These delightful bites add texture and a fun crunch, offering a contrast to the saucy beef for a complete experience.
Sweet and Spicy Sriracha Cucumbers: Thinly sliced cucumbers tossed with sriracha create an energizing, refreshing side that cools the palate.
Creamy Avocado Salad: Creamy avocado slices drizzled with lemon juice provide a rich yet mild counterpoint to the bold flavors of the beef.
Chilled Green Tea: This refreshing drink balances the savory dish while enhancing the meal with its calming properties.
Homemade Chocolate Mochi: A sweet finish to your meal, these chewy treats perfectly contrast the savory flavors of your main dish!
Fried Rice: Leftover rice transforms into a savory side when sautéed with peas, carrots, and scrambled eggs, making it a family favorite!
Sesame Noodles: These nutty, tangy noodles are a fantastic alternative, providing another layer of Asian-inspired flavor to your dinner table.
Mango Sticky Rice: End the night on a sweet note with this dessert, marrying flavors that will linger after that delicious Slow Cooker Mongolian Beef!

Expert Tips for Slow Cooker Mongolian Beef

• Slice Against the Grain: Ensure you slice the flank steak thinly against the grain for maximum tenderness in your Slow Cooker Mongolian Beef.

• Don’t Lift the Lid: Avoid the common mistake of lifting the slow cooker lid during cooking, as it allows heat and moisture to escape, affecting doneness.

• Sweetness Balance: Adjust the brown sugar in the sauce to match your taste preference; start with less if you’re unsure, adding more as needed.

• Add a Kick: For some heat, you can include red pepper flakes or chili paste into your sauce mixture, enhancing the flavor complexity.

• Store Smartly: Allow the Slow Cooker Mongolian Beef to cool down before storing it in an airtight container. It keeps well in the fridge for 3-4 days!

• Experiment with Veggies: Consider adding bell peppers, broccoli, or snap peas during the cooking process for added nutrition and a pop of color!

Make Ahead Options

These Slow Cooker Mongolian Beef are perfect for meal prep enthusiasts! You can slice the flank steak and mix the sauce up to 24 hours in advance. Simply store the beef and sauce in separate airtight containers in the refrigerator to maintain freshness and prevent any unwanted flavors from mingling. When you’re ready to enjoy, combine the beef and sauce in the slow cooker, and continue with the cooking instructions. You can also refrigerate the cooked dish for up to 3-4 days; just reheat thoroughly before serving. This way, you can enjoy a delicious, hearty meal throughout the week with minimal effort!

How to Store and Freeze Slow Cooker Mongolian Beef

Fridge: Store your Slow Cooker Mongolian Beef in an airtight container for up to 3-4 days. Make sure it cools completely before refrigerating to maintain its flavor and texture.

Freezer: For longer storage, freeze in a suitable container or freezer bag for up to 2-3 months. Label it with the date so you can easily keep track of its freshness.

Reheating: When ready to enjoy, thaw in the fridge overnight, then reheat gently in the microwave, on the stovetop, or in the oven until warmed through.

Serving Suggestions: Consider serving it fresh over rice or noodles after reheating to bring that delicious sweet-savory flavor back to life!

Slow Cooker Mongolian Beef Recipe FAQs

What type of flank steak should I choose for the best results?
Absolutely! When selecting flank steak, look for pieces that have a nice marbling, indicating tenderness and flavor. Freshness is key; choose meat without dark spots or excessive moisture. If flank steak isn’t available, sirloin or chuck roast works great too! Just remember to slice them thinly.

How should I store leftovers of Slow Cooker Mongolian Beef?
You can store your Slow Cooker Mongolian Beef in an airtight container in the refrigerator for up to 3-4 days. Make sure it has cooled entirely before transferring it, as this ensures it stays fresh and maintains its flavor.

Can I freeze Slow Cooker Mongolian Beef? What’s the best way?
Very! Freezing is a fantastic option for this dish. To freeze, allow the beef to cool completely, then transfer it to a freezer-safe container or bag. Be sure to label it with the date. This dish can be frozen for up to 2-3 months. When you’re ready to enjoy it, simply thaw overnight in the fridge and reheat it gently.

What if my beef isn’t tender after cooking?
If you find that your Slow Cooker Mongolian Beef isn’t tender enough, don’t worry! Simply cover and let it cook a bit longer on low heat. Check it after 30 minutes; it should be melt-in-your-mouth tender. The low heat helps break down the fibers, giving you that delicious texture.

Is this recipe suitable for people with dietary restrictions?
Absolutely! To make it gluten-free, just substitute regular soy sauce with gluten-free soy sauce, and ensure that any additional sauces or ingredients follow suit. Always read labels to make sure your ingredients are safe for your dietary needs.

How can I enhance the flavor of my Slow Cooker Mongolian Beef?
For an extra flavor kick, consider adding red pepper flakes or a dash of chili paste into the sauce mixture—this will give your dish a delightful heat that complements the sweet-savory profile. Additionally, adding colorful veggies like broccoli or bell peppers during the last hour of cooking can boost both flavor and nutrition!