Cook the lo mein noodles according to package instructions until al dente. Drain and set aside.

In a large skillet or wok, heat 2 tablespoons of vegetable oil over medium-high heat. Add the thinly sliced beef and season with salt and pepper. Cook for about 3-4 minutes, or until browned. Remove from the skillet and set aside.

In the same skillet, add a bit more oil if necessary. Toss in the minced garlic and ginger, cooking for about 30 seconds until fragrant. Add the broccoli florets and stir-fry for about 3-5 minutes, or until they are bright green and tender yet still crisp.

Return the cooked beef to the skillet with broccoli. Pour in the soy sauce and oyster sauce. Stir well to combine, letting the flavors meld together for an additional 2 minutes.

Carefully add the cooked lo mein noodles to the skillet. Drizzle with sesame oil and toss everything together until the noodles are fully coated and heated through.

Garnish with sliced green onions before serving. Enjoy!