Cook the egg noodles or spaghetti according to the package instructions until al dente. Drain and set aside.
In a large wok or skillet, heat the vegetable oil over medium-high heat.
Add the chicken strips and cook until browned and cooked through. Remove the chicken from the wok and set aside.
In the same wok, add the chopped onion and sauté until translucent.
Add the minced garlic and cook for another minute until fragrant.
Add the julienned carrot and bell pepper, and stir-fry for about 3-4 minutes until the vegetables are tender but still crisp.
Return the cooked chicken to the wok with the vegetables.
Add the cooked noodles to the wok and toss to combine with the chicken and vegetables.
Stir in the soy sauce, oyster sauce, ketjap manis (or dark soy sauce with a bit of sugar), ground black pepper, and ground cumin. Mix well to evenly coat the noodles and other ingredients.
Add the butter or margarine and toss until it melts and coats the noodles, adding a rich flavor.
Stir in the chopped green onions and fresh cilantro (if using).
Cook for another 2-3 minutes, stirring frequently, until everything is heated through and well combined.
Transfer the Surinamese Bami to a serving dish and serve hot.
Enjoy your meal!