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Keto Mongolian Beef
4.8 from 12 votes

Keto Mongolian Beef

My keto friendly version of Mongolian beef is an easy low carb dinner that takes just 20 minutes to make. My recipe has the same sweet, spicy and umami flavours we all love about this Chinese take-out favourite, with only 5g net carbs. I am convinced that it tastes better than the original!

Prep Time
5 mins
Cook Time
15 mins
Total Time
20 mins
Servings: 3
Calories: 359 kcal
Course: Main Course
Cuisine: Chinese, American

Ingredients

  • 1 lb flat iron steak or flank steak or sirloin, fat removed, 450g
  • salt
  • black pepper
  • 2 tablespoon olive oil or avocado oil, for frying, light
Sauce
  • 1 tablespoon ginger minced, fresh
  • 3 cloves garlic minced
  • ¼ teaspoon red pepper flakes or chili flakes
  • ⅓ cup tamari or medium soy sauce or coconut aminos, 80ml
  • ¼ cup water 60ml
  • 2 tablespoon erythritol or more, to taste, brown variety
  • 1 red bell pepper sliced (110g)
To Serve
  • 2 spring onions finely sliced (50g, large
  • ½ teaspoon sesame seeds toasted
  • drizzle of sesame oil optional, toasted

Instructions

    Cup of Yum
  1. Cut the steak against the grain into ½ cm thin slices. This is easiest if the meat is half-frozen (**see recipe notes). Season the beef strips with salt and pepper.
  2. Heat oil in a large wok or large frying pan until very hot. This ensures a good sear. Fry the sliced beef for 4 minutes, undisturbed before turning and cooking for 1 - 2 more minutes until just cooked through. You may need to do this in 2 batches - don't crowd the pan. Set aside.
  3. In the same pan, sauté the minced ginger, garlic, red pepper or chilli flakes for 1 minute until fragrant.
  4. Add in the tamari or soy sauce, sweetener and water. Turn up the heat and bring the mixture to the boil. Then, reduce the heat to medium and simmer for 3 - 4 minutes until the sauce reduces. (See notes ***)
  5. Add the crispy beef back to the pan, together with the sliced red bell peppers. Cook for a further 2 - 3 minutes until the peppers are just cooked through but still have a bite.
  6. Turn off the heat and stir in the spring onions and top with sesame seeds. Option to season with more black pepper and a drizzle of toasted sesame oil. Serve with cauliflower rice or broccoli rice or eat in lettuce cups.

Notes

  • Net Carbs: 5.3g per serve, makes 3 portions. Does not include cauliflower rice. 
  • **Freeze the beef for 20 minutes before cutting. Half-frozen steak is much easier to slice thinly.
  • ***Like it sticky? Thicken the sauce with ¼ teaspoon of xanthan gum, 1 teaspoon of ground chia seeds or 1 teaspoon of beef collagen powder after reducing.
  • Store leftovers in the fridge for 3 days or freezer for 3 months.

Nutrition Information

Calories 359kcal (18%) Total Carbohydrates 7g (2%) Protein 36.2g (72%) Fat 20.3g (31%) Saturated Fat 5.8g (29%) Fiber 1.8g (7%) Sugar 2.6g (5%)

Nutrition Facts

Serving: 3 Serving

Amount Per Serving

Calories 359

% Daily Value*

Calories 359kcal 18%
Total Carbohydrates 7g 2%
Protein 36.2g 72%
Fat 20.3g 31%
Saturated Fat 5.8g 29%
Fiber 1.8g 7%
Sugar 2.6g 5%

* Percent Daily Values are based on a 2,000 calorie diet.