Saucy Mongolian Beef – Gluten-Free
This tested-and-perfected gluten-free Mongolian Beef recipe has a little extra sauce (and flavor)!

- Prep time
- 20 min
- Cook time
- 20 min
- Yield
- 4 servings
- Difficulty
- MEDIUM
Ingredients
Quantities are shown as originally provided.
- 1 tbsp cornstarch
- 1 tbsp gluten-free soy sauce (tamari)
- 2 tsp rice vinegar
- ½ cup water
- ¼ cup gluten-free soy sauce (tamari)
- 2 1/2 tbsp tightly packed brown sugar
- 1 tbsp cornstarch
- 1 tbsp gluten-free oyster flavored sauce
- 1 tsp sesame oil
- ½ tsp ground black pepper
- ½-1 tsp red chili flakes (or to taste)
- 2-3 dashes ground white pepper
- 1/4 tsp sea salt (or to taste)
- 1 lb beef flank steak (very thinly sliced against the grain (see notes within text))
- 4 tbsp neutral oil (I use avocado or grapeseed) (divided)
- ½ onion (finely chopped)
- 3-4 garlic cloves (crushed)
- ½ inch piece ginger (crushed)
- 4 green onions or scallions (cut diagonally into 2-inch strips)
- sesame seeds (optional, for garnish)
- white rice (cooked (for serving))
Instructions
- 1
In a medium bowl, marinate the sliced beef with the ingredients listed under marinade. Cover and set aside. You can also refrigerate this for a longer marination until ready to use.
- 2
Meanwhile, combine the ingredients for the sauce. Keep the rest of the ingredients for stir-frying near the stovetop. This is also a good time to prepare the rice if you haven't already.
- 3
Heat 3 tbsp of the oil in a wok or skillet over high heat. Use tongs to lift half the meat pieces and place them into the hot oil. Brown them over high heat for about 1-2 minutes on each side. (Note 1) Remove and set aside on a plate. Repeat with the remaining beef.
- 4
In the same pan, heat the remaining 1 tbsp of oil and add the onions. Sauté until they are slightly brown, about 3 minutes. Add the garlic and ginger and continue to sauté for a minute.
- 5
Pour in the sauce and mix well. Let this simmer for about 10-15 seconds, stirring constantly, until slightly thickened. Add the cooked beef and stir-fry for a couple of minutes until the beef is cooked through and the sauce has reduced down to your desired consistency. Taste and adjust seasoning, adding salt if needed or red chili flakes to make it spicier.
- 6
Mix in the green onions. Sprinkle with sesame seeds, if using. Serve immediately with white rice.