Mongolian Beef is a popular dish featuring tender slices of beef stir-fried in a savory-sweet garlic-soy sauce with green onions. The glossy, flavorful sauce clings to every piece, making it incredibly satisfying with steamed rice or noodles. It’s fast, easy, and tastes just like restaurant-style Mongolian beef—only better at home!
Ingredients :
For the Beef:
1 lb (450g) flank steak or sirloin, thinly sliced against the grain
1/4 cup cornstarch
3 tbsp vegetable oil (for frying)
For the Sauce:
2 tbsp soy sauce
2 tbsp dark soy sauce (or use more regular soy sauce)
1/4 cup brown sugar
1/2 cup water
2 tsp hoisin sauce (optional, for added richness)
1 tbsp oyster sauce (optional)
2 cloves garlic, minced
1 tsp fresh ginger, minced
1/2 tsp crushed red pepper flakes (optional, for heat)
For Stir-Fry:
2 green onions, cut into 2-inch pieces
Steamed rice (for serving)
Cooking Directions:
Start by preparing the beef. In a bowl, toss the thinly sliced flank steak with cornstarch until each piece is evenly coated. Let the beef sit for 10 to 15 minutes. This step not only helps the beef develop a crisp texture when cooked, but also ensures the sauce will cling better to each piece later on.
While the beef is resting, prepare the sauce. In a separate bowl, combine soy sauce, dark soy sauce, brown sugar, water, hoisin sauce, and oyster sauce. Stir well and set the mixture aside.
Next, heat vegetable oil in a wok or large skillet over medium-high heat. Once the oil is hot, add the beef in a single layer—don’t overcrowd the pan. Sear the beef until it becomes brown and slightly crispy, about 1 to 2 minutes on each side. Cook in batches if necessary, then transfer the cooked beef to a plate lined with paper towels to drain any excess oil.
In the same pan, discard most of the oil, leaving about one tablespoon. Add the minced garlic, ginger, and red pepper flakes (if using), and stir-fry for about 30 seconds until fragrant. Pour in the sauce mixture and let it simmer for 1 to 2 minutes, or until it begins to thicken slightly.
Finally, return the cooked beef to the pan and toss to coat it evenly in the sauce. Add the chopped green onions and stir-fry everything together for another minute until the onions soften slightly and the sauce is glossy and thick. Remove from heat and serve immediately over steamed rice.