Boil the noodles according to package instructions, then drain and set aside.

In a large pan, heat vegetable oil over medium-high heat. Add ground beef and cook until browned, breaking it apart as it cooks. Drain excess fat.

Add minced garlic and ginger to the beef, cooking for about 1 minute until fragrant.

In a bowl, mix together soy sauce, brown sugar, beef broth, hoisin sauce, and red pepper flakes. Pour this mixture into the pan with the beef and stir well.

Add the cornstarch slurry to the pan. Stir and let it simmer until the sauce thickens.

Add the cooked noodles to the pan and toss until they are well coated with the sauce.

Sprinkle chopped green onions and sesame seeds over the dish before serving.