Mongolian Beef Stir Fry is a quick and delicious one-pot meal that’s perfect for busy weeknights.
With tender beef, fresh vegetables, and a savory-sweet sauce, this dish will become a family favorite in no time.
Plus, it’s made in a single pan, which means less cleanup!
Why You’ll Love This Recipe
Quick and Easy: This meal comes together in under 30 minutes, making it ideal for hectic evenings.
Flavorful and Versatile: The combination of savory soy sauce, sweet brown sugar, and a hint of ginger creates a flavor profile that’s loved by all. You can also customize the veggies based on what you have on hand.
Healthy Ingredients: Packed with protein and fresh vegetables, this dish is a nutritious option that doesn’t compromise on taste.

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Ingredients You’ll Need
For the Sauce:
- 1/3 cup soy sauce (low-sodium preferred)
- 1/4 cup brown sugar
- 1 tablespoon hoisin sauce
- 2 teaspoons cornstarch
- 1/2 teaspoon ground ginger (or 1 teaspoon fresh grated ginger)
- 2 garlic cloves, minced
- 1/4 cup water
For the Stir Fry:
- 1 pound flank steak, thinly sliced against the grain
- 2 tablespoons cornstarch
- 3 tablespoons vegetable oil, divided
- 1 red bell pepper, sliced
- 1 green bell pepper, sliced
- 1 small onion, thinly sliced
- 1 cup broccoli florets
- 2 green onions, chopped (optional for garnish)
- Sesame seeds (optional for garnish)
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Instructions
Step 1: Prepare the Sauce
In a small bowl, whisk together soy sauce, brown sugar, hoisin sauce, cornstarch, ginger, garlic, and water until smooth. Set aside.
Step 2: Prep the Beef
Pat the flank steak dry with paper towels and toss it with 2 tablespoons of cornstarch. This helps the beef achieve a crispy texture.
Step 3: Cook the Beef
Heat 2 tablespoons of vegetable oil in a large skillet or wok over medium-high heat.
Add the beef in a single layer and cook for 2-3 minutes per side until browned and slightly crispy. Remove the beef from the pan and set aside.
Step 4: Stir Fry the Vegetables
In the same pan, add the remaining 1 tablespoon of oil. Add the bell peppers, onion, and broccoli. Stir fry for 4-5 minutes until the vegetables are tender-crisp.
Step 5: Combine and Serve
Return the cooked beef to the pan with the vegetables.
Pour the sauce over the mixture and toss everything to coat evenly. Let it cook for 1-2 minutes until the sauce thickens.
Remove from heat and garnish with chopped green onions and sesame seeds, if desired.

One Pan Mongolian Beef Stir Fry
This One Pot Mongolian Beef Stir Fry combines tender, crispy beef with colorful vegetables, all coated in a rich, savory-sweet sauce. It’s a quick and flavorful dish that’s perfect for a satisfying weeknight dinner.
- Total Time: 35 minutes
- Yield: 4 servings 1x
Ingredients
For the Sauce:
- 1/3 cup soy sauce (low-sodium preferred)
- 1/4 cup brown sugar
- 1 tablespoon hoisin sauce
- 2 teaspoons cornstarch
- 1/2 teaspoon ground ginger (or 1 teaspoon fresh grated ginger)
- 2 garlic cloves, minced
- 1/4 cup water
For the Stir Fry:
- 1 pound flank steak, thinly sliced against the grain
- 2 tablespoons cornstarch
- 3 tablespoons vegetable oil, divided
- 1 red bell pepper, sliced
- 1 green bell pepper, sliced
- 1 small onion, thinly sliced
- 1 cup broccoli florets
- 2 green onions, chopped (optional for garnish)
- Sesame seeds (optional for garnish)
Instructions
- In a small bowl, whisk together soy sauce, brown sugar, hoisin sauce, cornstarch, ginger, garlic, and water until smooth. Set aside.
- Pat the flank steak dry with paper towels and toss it with 2 tablespoons of cornstarch to help the beef achieve a crispy texture.
- Heat 2 tablespoons of vegetable oil in a large skillet or wok over medium-high heat. Add the beef in a single layer and cook for 2-3 minutes per side until browned and slightly crispy. Remove the beef from the pan and set aside.
- In the same pan, add the remaining 1 tablespoon of oil. Add the bell peppers, onion, and broccoli. Stir fry for 4-5 minutes until the vegetables are tender-crisp.
- Return the cooked beef to the pan with the vegetables. Pour the sauce over the mixture and toss everything to coat evenly. Let it cook for 1-2 minutes until the sauce thickens.
- Remove from heat and garnish with chopped green onions and sesame seeds, if desired.
- Prep Time: 15 minutes
- Cook Time: 20 minutes