Keto Mongolian Beef

This sizzling keto Mongolian beef delivers crispy seared flank steak in a glossy ginger-garlic sauce sweetened with monk fruit, not sugar. At just 5.2g net carbs per serving and ready in 30 minutes, it tastes like takeout without wrecking your macros.

Jordan Lee
Jordan Lee

Head of Nutrition · June 17, 2026

Keto Mongolian Beef
15 min
Prep
15 min
Cook
30 min
Ready in
4
Servings
Easy
Difficulty

Nutrition per serving

5.2g
Net carbs
1.3g
Fiber
6.5g
Total carbs
34g
Protein
27g
Fats
412
Calories

Per serving · makes 4. Values are estimates; brands vary.

dinnergluten freedairy freequick easy

Crispy seared beef tossed in a glossy, garlicky ginger sauce — this keto Mongolian beef nails the takeout flavor you crave while keeping net carbs low. It comes together in one skillet in about 30 minutes.

Ingredients

  • 1.5 lb flank steak, thinly sliced against the grain
  • 2 tbsp coconut flour
  • 3 tbsp avocado oil, divided
  • 5 cloves garlic, minced
  • 1 tbsp fresh ginger, grated
  • 1/3 cup coconut aminos
  • 2 tbsp gluten-free tamari (or more coconut aminos)
  • 2 tbsp granulated monk fruit sweetener
  • 1/4 cup water
  • 1/4 tsp xanthan gum (for thickening)
  • 4 green onions, cut into 1-inch pieces
  • 1/2 tsp red pepper flakes (optional)

Instructions

  1. 1

    Toss the sliced flank steak with the coconut flour until each piece is lightly coated. Heat 2 tablespoons avocado oil in a large skillet or wok over high heat.

  2. 2

    Sear the beef in a single layer, working in two batches, for about 2 minutes per side until browned and crisp at the edges. Transfer to a plate and set aside.

  3. 3

    Lower heat to medium and add the remaining 1 tablespoon avocado oil. Add the garlic and ginger and stir for 30 seconds until fragrant.

  4. 4

    Pour in the coconut aminos, tamari, monk fruit, and water. Bring to a simmer, then sprinkle in the xanthan gum while whisking constantly so it doesn't clump. Simmer 2 to 3 minutes until the sauce thickens and turns glossy.

  5. 5

    Return the beef to the skillet and toss to coat in the sauce. Add the green onions and red pepper flakes, cooking 1 to 2 minutes more until the onions just soften.

  6. 6

    Serve hot over cauliflower rice or shirataki noodles.

Tips & notes

  • Slice the flank steak while it's partially frozen (about 30 minutes in the freezer) for the thinnest, most even pieces.
  • No xanthan gum? Let the sauce reduce a few extra minutes — it will thicken on its own, just slightly less cling.
  • Stores in an airtight container in the fridge for up to 4 days; reheat in a hot skillet to revive the texture. Great for meal prep.

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Frequently asked questions

How many carbs are in keto mongolian beef?
Each serving has 5.2g net carbs (6.5g total carbs minus 1.3g fiber), 412 calories, 34g protein, and 27g fat. This recipe makes 4 servings.
What can I serve with keto Mongolian beef?
Cauliflower rice and shirataki noodles are the best low-carb bases — both soak up the sauce without adding meaningful carbs. Steamed broccoli or sauteed bok choy also work well.
Can I use a different cut of beef?
Yes. Flank steak is traditional, but sirloin, skirt steak, or thinly sliced ribeye all work. Just slice against the grain and don't overcrowd the pan so the beef sears rather than steams.

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