Step 1: Cook the lo mein noodles according to package instructions. Drain and set aside.

Step 2: In a bowl, toss thinly sliced beef with 1 tablespoon soy sauce, cornstarch, and black pepper. Let it marinate for 5–10 minutes.

Step 3: Heat 1 tablespoon vegetable oil in a large skillet or wok over medium-high heat. Add the beef and cook for 2–3 minutes per side until browned and just cooked through. Remove beef and set aside.

Step 4: In the same skillet, add the remaining 1 tablespoon vegetable oil. Sauté garlic and ginger for 30 seconds until fragrant.

Step 5: Add bell pepper, broccoli, snap peas, and carrot. Stir-fry for 3–4 minutes until vegetables are crisp-tender.

Step 6: Return the cooked beef to the skillet. Add cooked noodles, oyster sauce, hoisin sauce, and sesame oil. Toss everything together until evenly coated and heated through.

Step 7: Remove from heat and garnish with sliced green onions and sesame seeds before serving.