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Flavorful Mongolian Beef Recipe Easy Weeknight Dinner with Green Onions

Mongolian beef recipe - featured image

A quick and satisfying Mongolian beef recipe featuring tender flank steak in a sweet-savory sauce with fresh green onions, perfect for busy weeknights.

Ingredients

Scale
  • 1 pound flank steak, thinly sliced against the grain
  • 45 stalks green onions, sliced
  • ½ cup low sodium soy sauce
  • ⅓ cup brown sugar
  • 3 cloves garlic, minced
  • 1 teaspoon fresh ginger, grated (optional)
  • 2 tablespoons vegetable oil or neutral oil
  • 2 tablespoons cornstarch
  • ½ cup water
  • Pinch of red pepper flakes (optional)

Instructions

  1. Trim any excess fat from the flank steak and slice thinly against the grain into strips about ¼-inch thick.
  2. Place sliced beef in a mixing bowl and sprinkle the cornstarch over it. Toss well so each piece is lightly coated.
  3. In a small bowl, combine soy sauce, brown sugar, minced garlic, grated ginger (if using), water, and red pepper flakes (if desired). Stir until sugar mostly dissolves. Set aside.
  4. Heat vegetable oil in a large skillet or wok over medium-high heat until shimmering but not smoking.
  5. Add the coated beef strips in a single layer. Let sear without stirring for about 2 minutes, then stir and continue cooking until beef is browned but not overcooked, about 2-3 more minutes. Work in batches if needed to avoid overcrowding.
  6. Pour the sauce mixture over the beef in the skillet. Stir to combine and cook for another 2-3 minutes until the sauce thickens and coats the beef nicely.
  7. Add the sliced green onions and toss quickly to warm them without losing their crunch. Remove from heat immediately.
  8. Transfer to a serving plate and serve immediately with steamed rice or your favorite side.

Notes

Slice beef thinly against the grain for tenderness. Avoid overcrowding the pan to prevent steaming. Add green onions at the end to keep their crunch. Watch the sauce closely as it thickens to avoid burning. For gluten-free, use tamari and arrowroot powder instead of soy sauce and cornstarch.

Nutrition

Keywords: Mongolian beef, flank steak, quick dinner, weeknight meal, stir-fry, green onions, easy recipe, sweet and savory sauce