Bring a large pot of water to a boil. Add the ramen noodles and cook according to package instructions until al dente, typically about 4-5 minutes.

While the noodles cook, season the sliced beef with salt and pepper.

In a large pot, heat sesame oil over medium heat. Add minced garlic and ginger, stirring for about 30 seconds until fragrant.

Add the seasoned beef to the pot, cooking until browned, about 3-4 minutes.

Stir in the broccoli florets and cook for another 2-3 minutes.

Pour in beef broth, soy sauce, and oyster sauce, stirring to combine.

Mix the cornstarch with water, then add it to the pot. Stir until the sauce thickens slightly, which should take about 2 minutes.

Drain the ramen noodles and add them to the pot, tossing everything together gently.

Serve hot, garnished with chopped green onions.