01 -
Combine sliced beef with hoisin sauce, soy sauce, sesame oil, garlic, ginger, and cornstarch. Let marinate for 15–20 minutes.
02 -
Cook noodles according to package directions. Drain, rinse with cold water, and set aside.
03 -
In a small bowl, mix all sauce ingredients and set aside.
04 -
Heat a wok or skillet over high heat. Sear beef in batches until browned, about 1–2 minutes per side. Set aside.
05 -
Stir-fry vegetables in the same pan until tender-crisp, about 2–3 minutes.
06 -
Return beef to the pan, add noodles, pour in the sauce, and toss everything over medium-high heat until combined and heated through.
07 -
Garnish with green onions, sesame seeds, and optional chili oil, then serve immediately.