Easy Crock Pot Mongolian Beef

My Favorite Slow Cooker Mongolian Beef Recipe You’ll Love

Hey there! If you’re as much of a fan of easy, flavorful weeknight dinners as I am, you’re going to love making Mongolian Beef in your slow cooker. It’s the perfect blend of sweet, salty, and a little spicy, all while being super tender and juicy. I’ve made this recipe countless times, and honestly, it always feels like a restaurant-quality dish without the fuss. Plus, it works wonderfully for leftovers, so you get more bang for your buck!

Why I Love This Mongolian Beef & Why You Will Too

This recipe is great because it uses simple ingredients you probably already have, and the slow cooker does most of the work. You can set it and forget it, which means you have more time to relax or get other things done. The beef comes out perfectly tender every time, soaking up that delicious sauce that has just the right balance of sweetness from brown sugar, saltiness from soy sauce, and just a little kick with chili flakes.

Nutritional Benefits of This Dish

Using lean cuts like flank steak or sirloin in this recipe makes it a good source of protein without a ton of extra fat. Beef gives you iron and vitamin B12, which are important for energy and overall health. If you want to keep things lighter, serving this over steamed jasmine or white rice keeps it simple, but you can swap in cauliflower rice for a low-carb option too.

Easy Variations to Try

• Make it spicier: Add more red chili flakes or a dash of sriracha if you like it hot.
• Vegetarian twist: Swap the beef with thick slices of portobello mushrooms or seitan and follow the same cooking instructions.
• Extra veggies: Toss in sliced bell peppers, broccoli, or snap peas about an hour before the cooking time is up for some freshness and crunch.
• Gluten-free: Just make sure you use tamari or a gluten-free soy sauce, and this dish fits your needs perfectly.

Step-by-Step Slow Cooker Mongolian Beef Recipe

Ingredients

• 1.5 to 2 lbs flank steak or sirloin, thinly sliced
• 1/2 cup low-sodium soy sauce
• 1/3 to 1/2 cup brown sugar
• 3-4 cloves garlic, minced
• 1 tablespoon fresh ginger, minced
• 2 tablespoons cornstarch
• 3-4 green onions/scallions, sliced (separate white and green parts if you want)
• 1/2 teaspoon red chili flakes (adjust to your taste!)
• 1-2 tablespoons vegetable oil or sesame oil (optional, for browning)
• 1/4 cup water or beef broth
• Cooked white or jasmine rice, for serving
• Optional: 1 tablespoon oyster sauce or hoisin sauce

How to Make It

1. First, cook your rice according to the package directions and keep it warm—it’s the perfect base for this dish.
2. Slice the beef thinly across the grain into bite-sized strips. Then toss the beef with cornstarch until every piece is coated. This helps make the beef tender and thickens the sauce later on.
3. Mix together the soy sauce, brown sugar, garlic, fresh ginger, red chili flakes, water (or broth), and if you want extra flavor, add oyster or hoisin sauce. Stir it until the sugar fully dissolves.
4. If you have extra time, heat oil in a skillet over medium-high heat and quickly brown the beef strips for about 1-2 minutes on each side. This adds a nice flavor, but you can skip it if you’re in a hurry.
5. Put the beef (seared or raw) into your slow cooker and pour the sauce mixture over the top. Toss gently to make sure everything’s coated.
6. Cook on low for 4-6 hours or high for 2-3 hours. You’ll know it’s done when the beef is tender and the sauce has thickened beautifully.
7. About 15 minutes before serving, stir in half the green onions (white and green parts). Save the rest to garnish on top.
8. Give everything a quick taste, and if you want, add more soy sauce, sugar, or chili flakes to suit your palate.
9. Serve your Mongolian beef hot over the warm rice and sprinkle with the remaining green onions for a fresh finish.

Tips to Make Your Mongolian Beef Shine

• Slice beef thinly: This helps it cook quickly and stay tender. If the meat is slightly frozen, slicing is easier.
• Don’t skip cornstarch: It really improves the texture and thickens the sauce perfectly without any added steps.
• Adjust sweetness and spice: Everyone’s taste buds are different, so feel free to tweak the sugar and chili flakes to get it exactly how you love it.
• Storage: Store leftovers in an airtight container in the fridge for up to 3 days. Reheat gently on the stove or in the microwave with a splash of water to keep the sauce saucy.
• Serving ideas: This dish pairs wonderfully with steamed veggies, stir-fried greens, or even noodles instead of rice.

Equipment You’ll Need

• Slow cooker (this is the star of the show here!)
• Sharp knife for slicing beef
• Mixing bowls for sauce and prepping beef
• Measuring cups and spoons
• Skillet or frying pan (optional, if you want to brown beef)
• Spoon or spatula for stirring

Frequently Asked Questions

1. Can I use other cuts of beef? Yes! Flank steak or sirloin are best since they cook nicely and stay tender. Other cuts might become tougher.
2. What if I don’t have a slow cooker? You can cook this on the stove on low heat for about 1-2 hours, stirring occasionally, but the slow cooker gives the best tender results.
3. How spicy is this dish? It has just a mild kick from the chili flakes, but you can add more for heat or leave them out for a milder flavor.
4. Can I prepare this ahead of time? Definitely! You can prep the beef and sauce earlier, keep them separate in the fridge, and throw everything in the slow cooker when you’re ready.
5. Is this recipe gluten-free? Not as is, because regular soy sauce has gluten. Use tamari or gluten-free soy sauce to keep it gluten-free.

Give This Mongolian Beef a Try and Let’s Connect!

I hope you feel inspired to make this comforting Mongolian Beef recipe—they say the best meals are made with love, and this one’s no exception! If you give it a try, I’d absolutely love to hear how it went for you. Be sure to follow and share your cooking adventures with me on Pinterest—there’s tons more simple, tasty recipes waiting for you there. Happy cooking!