If you’re on the hunt for a show-stopping meal that practically cooks itself, this Crockpot Mongolian Beef will absolutely steal the spotlight at your dinner table. Imagine melt-in-your-mouth beef, bathed in a sweet-savory sauce with hints of garlic and ginger—every bite feels like takeout magic but made right at home. This dish is comfort food perfected, making weeknights easier and tastier, whether you’re impressing family or treating yourself to a flavor-packed meal with minimal fuss.

Ingredients You’ll Need
The beauty of this Crockpot Mongolian Beef is its simplicity—each ingredient has a big role to play in bringing out that classic restaurant flavor and irresistible texture. Here’s the lowdown on what makes this dish pop:
- Flank steak (1 1/2 lbs), sliced thin: Thin slices of flank steak keep the meat tender and absorb all that luscious sauce.
- Soy sauce (1/2 cup): This creates the base of the magic sauce, giving rich umami notes and just the right saltiness.
- Brown sugar (1/4 cup): Adds sweetness and depth, perfectly balancing the soy sauce and giving a lovely caramel color.
- Cornstarch (2 tbsp): The secret to that glossy, silky sauce—don’t skip it!
- Garlic cloves (3, minced): Fresh garlic delivers bold, punchy aroma and sharpness.
- Ginger (1 tsp, minced): Just a bit of ginger rounds out the flavor, adding a gentle heat and fragrant kick.
How to Make Crockpot Mongolian Beef
Step 1: Layer Everything Into the Crockpot
Start by grabbing your trusty slow cooker and layer in the thinly sliced flank steak. Pour in the soy sauce, sprinkle over the brown sugar, and add the minced garlic and ginger. There’s no need for fancy prep, just mix them together gently—your Crockpot Mongolian Beef will taste amazing even with minimal effort. Pop the lid on, set it to low, and let your kitchen slowly fill with those irresistible aromas.
Step 2: Cook Low and Slow
The magic of Mongolian beef comes from its tender, flavorful meat, and the secret here is patience. Cooking on low for four hours gives the beef enough time to soak up all those flavors. The sauce will start to thicken and create that signature, silky texture that makes every bite addictive. Trust me, your future self will thank you for letting the slow cooker do its job!
Step 3: Thicken That Sauce
About 30 minutes before serving, whisk together your cornstarch with 1/4 cup of cold water. Stir this slurry into the Crockpot. This step is where the transformation happens—the sauce turns from brothy to gloriously glossy and perfectly coats every slice of beef. If you love that sticky, velvety sauce in Chinese takeout, you’ll swoon for this part.
Step 4: Serve and Savor
Time to plate up your Crockpot Mongolian Beef! Spoon it over a bed of fluffy steamed rice, making sure to pour plenty of sauce on top. This is your moment to dig in, and trust me, you’re in for a treat. The beef will be fork-tender, the sauce rich and sumptuous—just what homemade comfort food should be.
How to Serve Crockpot Mongolian Beef

Garnishes
Garnishing elevates the flavors and makes every plate of Crockpot Mongolian Beef look straight from a restaurant. Try scattering freshly sliced green onions for a crisp, fresh kick. A sprinkle of toasted sesame seeds adds nutty crunch and an extra hint of Asian flair. You can also add thin-sliced red chili for heat or a sprinkle of fresh cilantro for vibrant color.
Side Dishes
This Mongolian beef pairs beautifully with simple steamed white or brown rice, but don’t stop there! Fluffy jasmine or basmati rice soaks up that amazing sauce, and steamed broccoli or sautéed snap peas add brightness and crunch to the meal. If you love variety, a side of egg rolls or a tangy cucumber salad will round out your dinner perfectly.
Creative Ways to Present
While classic over rice is a hit, you can put a fun twist on serving Crockpot Mongolian Beef by tucking it into lettuce wraps for a lighter, hands-on approach. Toss leftovers with noodles for a quick Asian-inspired stir-fry, or make a hearty Mongolian beef bowl with rice, veggies, and a drizzle of sriracha. It also makes an eye-catching main for a dinner buffet when served in a nice platter with plenty of garnish.
Make Ahead and Storage
Storing Leftovers
If you happily find yourself with extra Crockpot Mongolian Beef, pop leftovers into an airtight container and keep them in the fridge. The beef actually gets even more flavorful overnight as it marinates further in the sauce, making tomorrow’s lunch something to look forward to! Leftovers stay fresh for up to 4 days.
Freezing
Crockpot Mongolian Beef freezes beautifully for meal prep or emergency comfort food. Cool any remaining beef to room temperature, then transfer it to a freezer-safe container or zip-top bag. It will keep well for up to three months, and freezing lets you savor those bold flavors any time the craving strikes.
Reheating
To reheat, gently warm your Mongolian beef in a saucepan over low heat, adding a splash of water or broth if the sauce has thickened too much. Microwave works in a pinch, too; just cover the dish and heat in short bursts, stirring to prevent overcooking. Either way, it’ll be just as delicious as day one—maybe even better!
FAQs
What cut of beef can I use besides flank steak?
If flank steak isn’t available, skirt steak or thinly sliced sirloin work wonderfully for Crockpot Mongolian Beef. These cuts stay tender and absorb the sauce beautifully, so feel free to use what you have on hand.
Can I add vegetables to this Crockpot Mongolian Beef?
Absolutely! Bell peppers, carrots, broccoli, or snap peas are all tasty additions. Just add them during the last hour of cooking so they stay crisp-tender and don’t get mushy.
Is this Mongolian beef recipe very sweet?
This homemade version strikes that cozy balance between sweetness and savory depth. If you like your sauce less sweet, simply reduce the brown sugar a bit—it’s adaptable to your taste.
How can I make this gluten-free?
Just be sure to choose a gluten-free soy sauce or tamari when making Crockpot Mongolian Beef. All the other ingredients are naturally gluten-free, so substitutions are easy and the flavor stays fantastic.
Can I double the recipe for a crowd?
Definitely! The recipe scales up beautifully for gatherings or meal prep. Just be sure your slow cooker can handle the volume, and add a little extra time if needed for everything to cook evenly.
Final Thoughts
I hope you’re as excited as I am to bring the incredible flavors of Crockpot Mongolian Beef into your own kitchen. This is comfort food at its absolute best—easy, flavor-packed, and guaranteed to please. Give it a try and see how quickly it becomes a new family favorite!
PrintCrockpot Mongolian Beef Recipe
Tender slices of flank steak cooked in a savory and slightly sweet Mongolian sauce, this Crockpot Mongolian Beef recipe is a must-try for busy weeknights.
- Prep Time: 15 minutes
- Cook Time: 4 hours
- Total Time: 4 hours 15 minutes
- Yield: 4 servings
- Category: Main Dish
- Method: Slow Cooking
- Cuisine: Asian
- Diet: Gluten Free
Ingredients
For the Crockpot Mongolian Beef:
- 1 1/2 lbs flank steak, sliced thin
- 1/2 cup soy sauce
- 1/4 cup brown sugar
- 2 tbsp cornstarch
- 3 garlic cloves, minced
- 1 tsp ginger, minced
Instructions
- Add beef, soy sauce, brown sugar, garlic, and ginger to the crockpot. Cook on low for 4 hours. This allows the flavors to meld together and the beef to become tender.
- Stir in cornstarch mixed with 1/4 cup water during the last 30 minutes of cooking. This step thickens the sauce to the perfect consistency.
- Serve with steamed rice. The fluffy rice is ideal for soaking up the delicious Mongolian sauce.
Nutrition
- Serving Size: 1 serving
- Calories: 320
- Sugar: 9g
- Sodium: 950mg
- Fat: 14g
- Saturated Fat: 6g
- Unsaturated Fat: 7g
- Trans Fat: 0g
- Carbohydrates: 14g
- Fiber: 0.5g
- Protein: 32g
- Cholesterol: 90mg