Here is a full, detailed Mongolian Beef recipe with ingredients, prep instructions, cooking steps, and pro tips.

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🇲🇳 Mongolian Beef – Full Detailed Recipe

A classic Chinese-American dish featuring tender slices of beef in a glossy, sweet-savory soy-ginger sauce. Quick to prepare and incredibly flavorful.

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Ingredients (2–4 servings)

For the Beef

• 1 lb (450 g) flank steak or sirloin, thinly sliced against the grain

• 1/4 cup cornstarch (for coating)

• 2 tbsp vegetable oil (for frying)

For the Sauce

• 1 tbsp vegetable oil

• 2–3 cloves garlic, minced

• 1 tbsp fresh ginger, minced

• 1/2 cup low-sodium soy sauce

• 1/2 cup water

• 1/2 cup brown sugar (light or dark)

• 1–2 tsp chili flakes (optional, for heat)

For Stir-Fry

• 2–3 green onions (spring onions), cut into 2-inch pieces

• Additional oil if needed

Optional Garnishes

• Sesame seeds

• Extra scallions

• Rice (for serving)

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Step-by-Step Directions

1. Prepare the Beef

1. Slice steak thinly (⅛–¼ inch) against the grain.

2. Pat dry with paper towels.

3. Toss the beef slices in a bowl with cornstarch, coating each piece evenly.

4. Shake off excess and let the coated beef rest for 10 minutes.

   • This lets the cornstarch adhere and helps crisp the beef later.

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2. Make the Sauce

1. Heat 1 tbsp oil in a small pan over medium heat.

2. Add minced garlic and ginger, sauté 30–45 seconds until fragrant (don’t burn).

3. Pour in:

   • ½ cup soy sauce

   • ½ cup water

4. Add ½ cup brown sugar and stir until dissolved.

5. Add chili flakes if using.

6. Let sauce simmer 2–3 minutes until slightly thickened.

7. Turn off heat and set aside.

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3. Cook the Beef

1. Heat 2 tbsp oil in a large skillet or wok over medium-high heat.

2. When the oil is hot, add beef slices in a single layer.

   • Cook in batches so they sear instead of steaming.

3. Fry each side 1–2 minutes until browned and crisp on edges.

4. Remove beef to a plate and continue until all pieces are cooked.

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4. Combine Beef and Sauce

1. Once all beef is cooked, return it to the wok or pan.

2. Pour in the prepared sauce.

3. Stir and cook for 2–4 minutes until:

   • Beef is fully coated

   • Sauce becomes glossy and thick

4. Add green onions, toss for the final 30–60 seconds.

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5. Serve

Serve hot over:

• Steamed jasmine rice

• Fried rice

• Noodles

Garnish with:

• Sesame seeds

• Extra green onions

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Pro Tips

• Slice beef while semi-frozen for thin, even slices.

• Don’t overcrowd the pan—you want a good sear.

• If sauce becomes too thick, add a splash of water.

• For extra crispiness, fry beef 2x (quick double fry).