In a bowl, mix the beef with 1 tbsp soy sauce and 1 tsp sugar. Let it sit for 10–15 minutes.
Prepare the sauce
In a small bowl, combine the oyster sauce with 2–3 tbsp water or beef broth. Set aside.
Stir-fry the beef
Heat oil in a wok or large skillet over high heat.
Add the beef and stir-fry quickly until it’s mostly cooked but still tender (about 2–3 minutes). Remove from pan and set aside.
Cook the onions and garlic
In the same pan, add a little more oil if needed.
Stir-fry the onions until slightly softened (2–3 minutes), then add garlic and cook until fragrant (about 30 seconds).
Combine everything
Return the beef to the pan.
Pour in the oyster sauce mixture and stir everything together, cooking for another 1–2 minutes until the sauce thickens slightly and coats the beef and onions.
Serve
Garnish with sliced green onions if desired.
Serve immediately over steamed rice or noodles.
💡 Tips:
For extra tenderness, you can marinate the beef with 1 tsp cornstarch and 1 tsp vegetable oil.
Use high heat for quick stir-frying to keep the beef tender and flavorful.
Add bell peppers or mushrooms if you like more veggies in your stir-fry.
If you want, I can also give a slightly saucier, restaurant-style version that has a glossy oyster sauce coating and a bit of caramelized sweetness. It’s really addictive.
