2Sear lean ground beef in a pan on high heat, pressing it into the pan and seasoning it with salt and pepper. Flip it after a few minutes when it develops a golden brown crust.
3Add minced garlic and grated ginger and cook for a few more minutes.
4Add brown sugar, hoisin sauce, soy sauce, beef broth, and optionally red chili flakes.
5Let that cook for a few more minutes before adding a cornstarch slurry.
6Add the noodles and mix everything together until combined.