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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
Cook Time 15 minutes
Total Time 30 minutes
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.