Bring the delicious flavors of your favorite Asian restaurant right to your dinner table with this homemade Mongolian beef. Thin strips of tender flank steak are coated in a light, crispy layer and tossed in a rich, glossy sauce made with soy sauce, garlic, ginger, and brown sugar. Finished with fresh green onions, this quick and satisfying meal is perfect for busy weeknights or family dinners.
Ingredients
Flank steak
Cornstarch
Soy sauce
Garlic
Fresh ginger
Green onions
Vegetable oil
Brown sugar
Red pepper flakes (optional)
How to Make
Slice the Beef: Cut the flank steak into thin, bite-sized strips, making sure to slice against the grain. This helps keep the meat tender and allows it to absorb the sauce.
Coat with Cornstarch: Place the beef strips in a mixing bowl and coat them evenly with cornstarch. Let the coated beef rest for 10 minutes so the coating can settle.
Heat the Skillet: Set a large skillet or wok over high heat and add vegetable oil. Allow the pan to become hot enough to sear the beef properly.
Cook the Beef: Add the coated steak strips to the hot pan in batches. Sear until the outside develops a golden, crispy finish while the inside remains tender. Avoid overcrowding the pan so the beef cooks evenly.
Prepare the Sauce: Using the same skillet, combine the soy sauce, garlic, ginger, brown sugar, and optional red pepper flakes. Let the mixture bubble until it thickens into a glossy sauce.
Toss Everything Together: Return the cooked beef to the skillet and toss until every strip is covered with the flavorful sauce.
Garnish and Serve: Transfer the Mongolian beef to a serving dish and sprinkle with sliced green onions. Serve immediately over warm rice.
Important Recipe Tips
Slice for Tenderness: Place the steak in the freezer briefly until slightly firm. This makes it easier to cut into thin, even strips.
Balance the Sauce: Adjust the soy sauce and brown sugar to suit your preferred combination of savory and sweet flavors.
Try a Different Coating: Almond flour or arrowroot powder can be used instead of cornstarch for an alternative coating.
Make It Vegetarian: Replace the beef with firm tofu or portobello mushrooms. Press out excess moisture before coating and cooking.
Adjust the Heat: Add red pepper flakes or sriracha for extra spice, or leave them out for a milder dish.
Serving Ideas: Jasmine rice makes a fragrant base for the beef. Add sesame seeds and extra green onions for more texture, or offer sriracha and chili oil on the side. Serving everything in one large dish also makes this meal great for family-style dining.
Store Leftovers Properly: Keep leftover Mongolian beef in an airtight container in the refrigerator for 3–4 days. For the best texture, store the sauce and beef separately when possible.
Reheat Gently: Warm the beef in a skillet over medium heat with a small splash of water or broth to bring back its saucy consistency without drying it out.
Prepare Ahead: Uncooked marinated beef strips can be frozen in sealed freezer bags for up to 2 months, making future meals easier to prepare.
Final Thought
This homemade Mongolian beef is a wonderful way to turn simple ingredients into a flavorful, restaurant-style dinner. With tender steak, crispy edges, and a sweet-savory garlic sauce, every bite is delicious. Serve it with your favorite rice and enjoy a comforting meal the whole family can look forward to!
