Step 1: Marinate the Beef
In a bowl, toss sliced beef with 1 tablespoon soy sauce and a pinch of black pepper. Set aside while you prepare the other ingredients.
Step 2: Prepare the Noodles
Cook rice noodles like instructed from the package. Run under cold water to stop cooking.
If using refrigerated noodles, warm them slightly to loosen.
Step 3: Stir-Fry the Beef
Heat vegetable oil in a large pan or wok over high heat. Add the beef and stir-fry quickly until just browned (about 2–3 minutes). Remove and set aside.
Step 4: Cook the Aromatics & Noodles
In the same pan, add minced garlic and green onions. Stir-fry for 30 seconds until fragrant.
Add the rice noodles, remaining soy sauce, oyster sauce and sesame oil. Toss gently to coat the noodles.
Step 5: Finish the Dish
Return the beef to the pan. Stir-fry everything together for 1–2 minutes until heated through. Season with salt and black pepper to taste.
Step 6: Serve
Serve hot, garnished with extra green onions if desired.