Ingredients:
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500 g beef sirloin or flank steak (thinly sliced against the grain)
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2 tbsp vegetable oil
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1 onion (sliced)
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1 bell pepper (sliced)
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1 carrot (julienned)
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1 zucchini (sliced)
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3 cloves garlic (minced)
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2 tbsp soy sauce
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1 tbsp oyster sauce
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1 tbsp hoisin sauce
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1 tbsp sesame oil
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1 tsp ginger (minced)
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2 tbsp cornstarch mixed with 2 tbsp water (for thickening)
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2 tsp sesame seeds (for garnish)
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Green onions (chopped, for garnish)
Instructions:
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Prepare the beef
Slice the beef into thin strips against the grain. In a small bowl, toss the beef with 1 tbsp soy sauce and 1 tbsp cornstarch. Set aside for 10 minutes. -
Stir-fry vegetables
Heat 1 tbsp of vegetable oil in a large wok or skillet over medium-high heat. Add the sliced onions, bell peppers, carrots, and zucchini. Stir-fry for 3–4 minutes until tender-crisp. Remove the vegetables from the wok and set aside. -
Cook the beef
In the same wok, add another tablespoon of oil. Add the marinated beef and stir-fry for 2–3 minutes until browned. -
Make the sauce
Add garlic, ginger, soy sauce, oyster sauce, hoisin sauce, and sesame oil to the beef. Stir to combine, cooking for another 2 minutes. If the sauce is too thin, add the cornstarch mixture and stir until thickened. -
Combine beef and vegetables
Return the vegetables to the wok and toss everything together. Cook for an additional 2–3 minutes. -
Serve
Garnish with sesame seeds and green onions. Serve hot over steamed rice.