Cook Noodles: Boil lo mein noodles according to package instructions. Drain and set aside.
Sear Beef: In a wok or large skillet, sear thinly sliced beef until browned. Remove and set aside.
Stir-Fry Veggies: In the same wok, stir-fry minced garlic, grated ginger, and assorted vegetables until tender-crisp.
Combine and Sauce: Add the cooked noodles and seared beef back to the wok. Pour in soy sauce, sesame oil, oyster sauce, and hoisin sauce. Toss until well combined.
Garnish and Serve: Garnish with sliced green onions and sesame seeds. Serve your Homemade Beef Lo Mein hot and enjoy the explosion of flavors!