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Savory Mongolian Beef Noodles Recipe

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4.8 from 51 reviews

Savory Noodles with Mongolian Beef is a flavorful and hearty lunch recipe featuring tender marinated beef slices cooked with a rich, sweet-savory Mongolian sauce, stir-fried vegetables, and perfectly cooked egg noodles. This dish is a delicious fusion of bold Asian flavors and convenient stir-fry techniques, ideal for a satisfying mid-day meal.

Ingredients

For the Beef Marinade

  • 500 g flank steak or sirloin, thinly sliced against the grain
  • 2 tbsp cornstarch
  • 2 tbsp light soy sauce
  • 1 tbsp dark soy sauce
  • 1 tbsp oyster sauce
  • 2 tbsp beef broth
  • 1 tbsp sesame oil
  • 1 tsp garlic, minced

For the Mongolian Sauce

  • 1/4 cup light soy sauce
  • 1 tbsp dark soy sauce
  • 1/4 cup brown sugar
  • 1/2 cup beef broth
  • 1 tbsp apple cider vinegar
  • 1 tbsp cornstarch mixed with 2 tbsp water (slurry)
  • 1 tsp grated fresh ginger
  • 2 cloves garlic, minced

For the Noodles and Stir-Fry

  • 250 g egg noodles or ramen noodles without seasoning packets
  • 2 tbsp vegetable oil or sesame oil for aroma
  • 1 small onion, thinly sliced
  • 1 medium carrot, julienned
  • 1 small red bell pepper, thinly sliced
  • 3 green onions, cut into 2-inch pieces
  • 1 cup broccoli florets, lightly steamed

Optional Garnish

  • 1 tsp toasted sesame seeds
  • Extra green onions, finely sliced

Instructions

  1. Prepare and Marinate the Beef: In a medium bowl, combine the sliced flank steak, cornstarch, light soy sauce, dark soy sauce, oyster sauce, beef broth, sesame oil, and minced garlic. Mix thoroughly to coat the beef evenly. Allow the beef to marinate for at least 10 minutes to tenderize and absorb the flavors while you prepare other components.
  2. Cook the Noodles: Bring a large pot of salted water to a boil. Add the egg noodles and cook according to package instructions until al dente. Drain well and toss with a light drizzle of oil to prevent sticking. Set aside.
  3. Make the Mongolian Sauce: In a small bowl, whisk together light soy sauce, dark soy sauce, brown sugar, beef broth, apple cider vinegar, grated ginger, and minced garlic. In a separate small cup, mix cornstarch with water to create a slurry for thickening. Keep both mixtures ready.
  4. Stir-Fry the Beef: Heat 1 tablespoon of oil in a large wok or skillet over medium-high heat. Add marinated beef slices in a single layer, cooking in batches if necessary to avoid overcrowding. Sear each side for 1 to 2 minutes until browned but still tender. Remove the beef from the pan and set aside.
  5. Cook the Vegetables: Add the remaining tablespoon of oil to the same wok. Toss in the sliced onions, julienned carrot, and red bell pepper. Stir-fry for 2 to 3 minutes until they start to soften but retain some crispness. Add steamed broccoli florets and toss briefly to combine.
  6. Combine Beef, Sauce, and Noodles: Return the cooked beef to the wok with the vegetables. Pour in the prepared Mongolian sauce and stir well, letting it simmer gently. Stir in the cornstarch slurry and cook for 2 to 3 minutes until the sauce thickens and turns glossy. Add the cooked noodles and toss all ingredients thoroughly until the noodles are evenly coated. Finally, add the green onion pieces and mix briefly.
  7. Serve Hot and Garnish: Transfer the noodles and beef mixture to a serving dish. Sprinkle with toasted sesame seeds and additional sliced green onions for extra flavor and an appealing presentation. Serve immediately while hot for the best taste and texture.

Notes

  • Slice the beef thinly against the grain for maximum tenderness.
  • The cornstarch in the marinade helps tenderize the meat and creates a silky texture.
  • Lightly steaming broccoli before stir-frying ensures it cooks evenly without becoming mushy.
  • Cook noodles just until al dente to avoid overcooking when mixing with the sauce.
  • Use sesame oil for a more aromatic flavor in the stir-fry if preferred over vegetable oil.
  • The sauce thickness can be adjusted by adding more or less cornstarch slurry.
  • Feel free to swap out vegetables based on availability or preference.
  • Serve immediately to enjoy the best combination of textures.