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Whole30 Mongolian Beef Stir Fry
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4.84 from 6 votes

Whole30 Mongolian Beef Stir Fry

Cook Time30 minutes
Servings: 4 people


For the Mongolian Beef:

  • 1.5 pounds skirt or flank steak
  • 1 teaspoon kosher salt
  • 1/2 tsp freshly ground black pepper
  • 1 tablespoon arrowroot starch
  • 4 tablespoons avocado or extra virgin olive oil
  • 3 garlic cloves thinly sliced
  • 1 1-inch piece fresh ginger, finely grated
  • 1 teaspoon toasted sesame oil
  • 1/2 tsp crushed red pepper flakes optional
  • 1/2 cup low-sodium beef broth
  • 6 green onions sliced into 1.5-inch pieces (white and green parts)
  • 1/2 cup coconut aminos (I like Big Tree Farm Brand)
  • 1 tablespoon rice vinegar
  • 1 teaspoons fish sauce I like Red Boat
  • 1 tablespoon toasted sesame seeds for serving
  • Seared Baby Bok Choy recipe follows, for serving

For the Seared Baby Bok Choy:

  • 1 tbsp avocado oil
  • 2 heads baby bok choy, rinsed, dried, and halved lengthwise
  • 1 tsp fish sauce
  • freshly ground black pepper


Make the Mongolian Beef:

  • Place the flank steak on a cutting board and using a meat mallet or the back of a skillet, tenderize the meat, pounding the steak until it is [1/2] inch thick. Remove and discard the parchment paper, then slice the steak against the grain into [1/4]-inch-thin pieces. Add the steak to a large bowl and sprinkle with the salt, pepper, and arrowroot starch. Toss to coat.
  • In a large nonstick skillet, heat the avocado oil over medium-high heat. Working in batches so you don’t crowd the pan, add the steak in a single layer. Sear the steak until it forms a deep brown crust, 3 to 4 minutes per side. Transfer the cooked steak to a plate and set aside. Repeat until all the steak is cooked and all of the meat is set aside.
  • Add the garlic, ginger, sesame oil, and red pepper flakes to the skillet and cook, stirring, for 1 minute. Pour in the beef broth and bring to a simmer. Let simmer for about 2 minutes and use the back of a spoon to scrape up any brown bits from the pan.
  • Return the steak to the skillet. Stir in the green onions, coconut aminos, rice vinegar, and fish sauce and bring the sauce to a simmer. Cook, stirring often, until the sauce has thickened, 3 to 5 minutes.
  • Spoon the stir fry over the Cauliflower Rice and sprinkle with the sesame seeds. Serve with the Seared Baby Bok Choy.

Make the Bok Choy:

  • In a large skillet over medium-high heat, heat the avocado oil. Sear the bok choy until golden brown, 3 to 4 minutes per side. Add the fish sauce and season with pepper to taste.