Mongolian Beef is an easy and flavorful dinner recipe that comes together in just 30 minutes! Each slice of tender beef is perfectly seared, coated in a sweet, garlicky sauce, and tastes just like your favorite Chinese restaurant dish.
Made with simple pantry ingredients—no oyster or hoisin sauce needed—this quick stir-fry is perfect for busy weeknights. Serve it with rice or noodles for a satisfying meal that’s crispy, saucy, and bursting with bold flavor in every bite!

Prep Time
10 minutes
Cook Time
15 minutes
Total Time
25 minutes
Ingredients
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1 pound flank steak
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1/4 cup cornstarch
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1/4 cup vegetable oil
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2 teaspoons fresh ginger, minced
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1 tablespoon garlic, minced
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1/3 cup lite soy sauce, low sodium
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1/3 cup water
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1/2 cup dark brown sugar, packed
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4 stalks green onions, green parts only, cut into 2 inch pieces
Instructions
- Slice the flank steak against the grain (the grain is the length of the steak) in 1/4-inch pieces and add it to a ziplock bag with the cornstarch.
- Press the steak around in the bag making sure each piece is fully coated with cornstarch and leave it to sit.
- Add the oil to a large frying pan and heat on medium high heat.
- Add the steak, shaking off any excess corn starch, to the pan in a single layer and cook on each side for 1 minute. Then remove it from the pan.
- Note: If you need to cook the steak in batches because your pan isn't big enough, do that rather than crowding the pan. You want to get a good sear on the steak, and if you crowd the pan your steak with steam instead of sear.
- Once steak is cooked and removed, add the ginger and garlic to the pan and sauté for 10-15 seconds.
- Add the soy sauce, water, and dark brown sugar to the pan and let it come to a boil.
- Add the steak back in and let the sauce thicken for 20-30 seconds.
- If sauce isn't think enough, add 1 tablespoon of cornstarch to 1 tablespoon of cold water and stir to dissolve the cornstarch and add it to the pan.
- Add the green onions, stir to combine everything, and cook for a final 20-30 seconds. Serve immediately.
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