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Easy Instant Pot Mongolian Beef Recipe with Green Onions for Perfect Dinner

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A quick and easy Instant Pot recipe for tender Mongolian beef with a sweet-savory sauce and fresh green onions, perfect for busy weeknights or dinner parties.

Ingredients

Scale
  • 1 lb flank steak, thinly sliced against the grain
  • 2 tbsp vegetable oil or avocado oil
  • 3 cloves garlic, minced
  • 1 tbsp fresh ginger, grated
  • ½ cup low-sodium soy sauce (120 ml)
  • ⅓ cup brown sugar, packed (70 g)
  • ½ cup beef broth (120 ml)
  • 2 tbsp cornstarch
  • 4–5 green onions, sliced thinly
  • ¼ tsp red pepper flakes (optional)

Instructions

  1. Slice the flank steak thinly against the grain, about ¼ inch thick. Toss the beef slices in a mixing bowl with 2 tablespoons of cornstarch until lightly coated.
  2. Set the Instant Pot to ‘Sauté’ mode and heat 2 tablespoons of oil. Sear the beef in batches for about 2 minutes per side until browned but not fully cooked. Remove and set aside.
  3. In the same pot, add minced garlic and grated ginger. Stir for about 30 seconds until fragrant.
  4. Add ½ cup soy sauce, ⅓ cup brown sugar, and ½ cup beef broth. Stir well, scraping up browned bits from the bottom.
  5. Return the seared beef to the pot and stir into the sauce. Seal the Instant Pot lid and set to ‘Pressure Cook’ on high for 8 minutes with the valve set to sealing.
  6. When cooking is done, perform a quick release carefully. Open the lid and switch back to ‘Sauté’ mode.
  7. Stir in the remaining cornstarch slurry (2 tbsp cornstarch mixed with 2 tbsp cold water). Cook for 2-3 minutes, stirring constantly, until the sauce thickens.
  8. Turn off the Instant Pot and sprinkle sliced green onions and red pepper flakes (if using) on top. Stir gently and serve.

Notes

For gluten-free, substitute tamari for soy sauce and arrowroot powder for cornstarch. Do not skip quick release to keep beef tender. If sauce is too thick, add a splash of beef broth to loosen. Searing in batches prevents steaming and keeps beef tender.

Nutrition

Keywords: Instant Pot, Mongolian beef, easy dinner, pressure cooker, beef recipe, green onions, quick meal, sweet-savory sauce

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