Mongolian Beef Lo Mein Recipe

If you love the sweet, savory, and slightly spicy flavors of Mongolian beef and the comforting chew of lo mein noodles, this Mongolian Beef Lo Mein Recipe is the perfect fusion you’ve been craving.

It combines tender strips of beef, crisp vegetables, and silky noodles tossed in a glossy Mongolian-style sauce that’s both satisfying and easy to make at home.

Forget takeout—this dish will quickly become a weeknight favorite.

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Why You’ll Love This Dish

• Better than takeout: Fresher ingredients, less oil, and customizable to your taste.

• Quick and easy: Ready in about 30 minutes, making it perfect for busy nights.

• Flavor-packed: A balance of sweet soy, garlic, ginger, and a touch of heat creates a bold, umami-rich sauce.

• Family-friendly: Both kids and adults will love it, and you can easily adjust the spice level.

Ingredients You’ll Need

Here’s what goes into making this delicious lo mein:

For the Beef

• 1 lb flank steak (thinly sliced against the grain)

• 2 tbsp cornstarch

• 1 tbsp soy sauce

For the Sauce

• ½ cup low-sodium soy sauce

• ¼ cup brown sugar

• 2 tbsp hoisin sauce

• 2 cloves garlic (minced)

• 1 tsp fresh ginger (grated)

• ½ tsp red pepper flakes (optional, for heat)

• ½ cup beef broth

For the Lo Mein

• 8 oz lo mein noodles (or spaghetti if unavailable)

• 1 tbsp sesame oil

• 1 red bell pepper (sliced thin)

• 1 cup broccoli florets

• 2 green onions (sliced, for garnish)

• 1 tbsp vegetable oil (for stir-frying)

Step-by-Step Instructions

Prepare the Beef

• In a bowl, toss the sliced flank steak with cornstarch and soy sauce. Let it marinate for about 10 minutes while you prepare the other ingredients.

Cook the Noodles

• Bring a pot of salted water to a boil and cook the lo mein noodles according to package directions. Drain and set aside.

Make the Sauce

• In a small bowl, whisk together soy sauce, brown sugar, hoisin sauce, garlic, ginger, red pepper flakes, and beef broth. Set aside.

Stir-Fry the Beef

• Heat vegetable oil in a large skillet or wok over medium-high heat. Add the beef in a single layer and cook until browned, about 2–3 minutes per side. Remove from the pan and set aside.

Cook the Vegetables

• In the same pan, add sesame oil, bell pepper, and broccoli. Stir-fry until slightly tender but still crisp, about 3 minutes.

Combine Everything

• Return the beef to the pan, pour in the sauce, and toss until everything is coated. Add the noodles and stir until well combined and heated through.

Serve and Garnish

• Sprinkle with sliced green onions and serve hot.

Also Check: Crispy Frittata Noddles

Tips for Success

• Slice beef thinly: Cutting against the grain makes it extra tender.

• Adjust sweetness: Add more or less brown sugar depending on your preference.

• Spice it up: Increase red pepper flakes or add a dash of sriracha for more heat.

• Use fresh noodles: If you can find fresh lo mein noodles, they give the best texture.

Serving Suggestions

This Mongolian Beef Lo Mein Recipe pairs perfectly with:

• A side of steamed dumplings

• Fresh spring rolls

• A light cucumber salad for balance

Read More: Ginger Beef Stir Fry with Vegetables

Storage and Reheating

• Store: Keep leftovers in an airtight container in the fridge for up to 3 days.

• Reheat: Warm in a skillet with a splash of water or broth to loosen the sauce.

FAQs

Q: Can I use another cut of beef?
Yes, flank steak is ideal, but you can also use sirloin or skirt steak—just slice thinly.

Q: Can I make this vegetarian?
Absolutely! Swap the beef for tofu, mushrooms, or extra veggies and use vegetable broth instead of beef broth.

Q: What if I can’t find lo mein noodles?
Spaghetti or linguine works great as a substitute.

Q: Can I meal prep this?
Yes—cook and portion it out into containers for a quick grab-and-go lunch or dinner.

Final Thoughts

This Mongolian Beef Lo Mein Recipe is the ultimate homemade comfort food. It’s bold, savory-sweet, and endlessly customizable to fit your preferences.

Whether you’re feeding the family or simply craving takeout-style noodles, this dish brings restaurant-quality flavor straight to your kitchen.

Mongolian Beef Lo Mein Recipe

This Mongolian Beef Lo Mein Recipe combines tender beef, crisp vegetables, and silky noodles in a sweet, savory, and slightly spicy sauce for a quick, better-than-takeout meal.

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Prep Time 15 minutes mins

Cook Time 15 minutes mins

Total Time 30 minutes mins

Servings: 4

Course: Lunch, Main Course

Cuisine: asian, Chinese

Ingredients Method

Ingredients

  

For the Beef

• 1 lb flank steak thinly sliced against the grain
• 2 tbsp cornstarch
• 1 tbsp soy sauce

For the Sauce

• ½ cup low-sodium soy sauce
• ¼ cup brown sugar
• 2 tbsp hoisin sauce
• 2 cloves garlic minced
• 1 tsp fresh ginger grated
• ½ tsp red pepper flakes optional, for heat
• ½ cup beef broth

For the Lo Mein

• 8 oz lo mein noodles or spaghetti if unavailable
• 1 tbsp sesame oil
• 1 red bell pepper sliced thin
• 1 cup broccoli florets
• 2 green onions sliced, for garnish
• 1 tbsp vegetable oil for stir-frying

Method

 

1. Toss the thinly sliced flank steak with cornstarch and soy sauce, then let it rest for 10 minutes.
2. Bring a large pot of salted water to a boil.
3. Cook the lo mein noodles according to the package directions, then drain and set aside.
4. Whisk the soy sauce, brown sugar, hoisin, minced garlic, grated ginger, red pepper flakes, and beef broth in a small bowl.
5. Heat the vegetable oil in a large skillet or wok over medium-high heat.
6. Spread the beef in a single layer and sear until browned, about 2–3 minutes per side, then remove to a plate.
7. Add the sesame oil to the same pan, then stir-fry the bell pepper and broccoli until crisp-tender, about 3 minutes.
8. Return the beef to the pan and pour in the sauce, stirring until everything is coated and the sauce begins to simmer.
9. Add the cooked noodles and toss until the noodles are coated and heated through.
10. Turn off the heat, garnish with sliced green onions, and serve hot.