Creating Sticky Beef Noodles is simple if you follow these steps:

1. Cook the Noodles: Start by cooking the rice noodles according to package instructions. Drain and set aside.
2. Prepare the Marinade: In a mixing bowl, combine soy sauce, oyster sauce, hoisin sauce, sugar, ground ginger, and black pepper. Mix well and set aside.
3. Heat the Oil: In a large pan or wok, heat vegetable oil over medium-high heat.
4. Cook the Beef: Add the sliced flank steak to the pan and stir-fry for about 2-3 minutes until browned. Remove the beef from the pan and set it aside.
5. Sauté the Vegetables: In the same pan, add minced garlic, sliced onion, and bell pepper. Stir-fry for 3-4 minutes until the vegetables are tender-crisp.
6. Combine Ingredients: Return the cooked beef to the pan. Pour the marinade over the beef and vegetables, stirring to combine well.
7. Add Noodles: Gently add the cooked rice noodles into the pan. Toss everything together, ensuring that the noodles are thoroughly coated with the sauce.
8. Heat Through: Continue to cook for another 2-3 minutes until everything is heated through.
9. Garnish and Serve: Remove from heat and serve immediately, garnished with sliced green onions and sesame seeds.

Following these steps will lead you to the ultimate dish of Sticky Beef Noodles, bursting with flavor and perfectly sticky sauce.