Creating Sticky Beef Noodles can be straightforward if you follow these easy steps:

1. Cook the Noodles: Boil the noodles according to the package instructions until al dente. Drain and set aside.
2. Prepare the Beef: In a bowl, combine sliced beef with soy sauce, cornstarch, and a pinch of salt. Let it marinate for at least 15 minutes.
3. Heat the Oil: In a large skillet or wok, heat the vegetable oil over medium-high heat.
4. Cook the Beef: Add the marinated beef to the skillet in batches to ensure even cooking. Cook until browned, about 3-4 minutes. Remove and set aside.
5. Sauté Onions and Aromatics: In the same skillet, add the sliced onion, minced garlic, and minced ginger. Sauté for 2 minutes until fragrant.
6. Combine Sauces: In a small bowl, mix together the oyster sauce, hoisin sauce, brown sugar, sesame oil, and red pepper flakes (if using). Pour this sauce mixture into the skillet.
7. Add the Beef Back: Return the cooked beef to the skillet, tossing to coat evenly with the sauce.
8. Combine with Noodles: Add the cooked noodles to the skillet. Toss until noodles are coated in the sauce and heated through, about 2-3 minutes.
9. Garnish: Remove from heat and sprinkle with sliced green onions and sesame seeds.
10. Serve Immediately: Plate the noodles while hot and enjoy!

These steps will help you create Sticky Beef Noodles that are both delicious and satisfying.