Creating Spicy Korean Gochujang Beef Noodles is simple when you follow these steps:

1. Cook the Noodles: Follow the package instructions to cook the rice noodles. Drain and set aside.
2. Marinate the Beef: In a bowl, combine the sliced beef with gochujang, soy sauce, sesame oil, garlic, and ginger. Let it marinate for about 10 minutes.
3. Heat the Oil: In a large skillet or wok, heat vegetable oil over medium-high heat.
4. Stir-Fry the Beef: Add the marinated beef to the skillet and stir-fry for about 3-4 minutes until browned and cooked through.
5. Add Vegetables: Toss in the bell peppers and broccoli, stir-frying for another 2-3 minutes until the vegetables are tender-crisp.
6. Combine Noodles: Add the cooked noodles to the skillet and toss everything together, making sure the noodles are well coated in the sauce.
7. Season: Taste and adjust seasoning with salt and pepper as needed.
8. Garnish: Remove from heat and garnish with sliced green onions and sesame seeds, if desired.
9. Serve: Plate the noodles in bowls for serving.

These steps will help you create a delicious and satisfying meal that everyone will love.