01 - Soak the rice noodles in warm water according to package instructions until just tender. Drain and set aside.
02 - In a small bowl, whisk together soy sauce, oyster sauce, sesame oil, brown sugar, rice vinegar, and chili flakes until sugar dissolves. Set aside.
03 - Heat a large wok or skillet over medium-high heat. Add a splash of oil, then add garlic and onion. Stir-fry for 1 minute until fragrant.
04 - Add carrot, bell pepper, and snap peas to the wok. Stir-fry for 2–3 minutes until vegetables are crisp-tender.
05 - Add the drained rice noodles and bean sprouts to the wok. Pour the sauce evenly over the noodles and vegetables.
06 - Toss everything together for 2–3 minutes using tongs or chopsticks until noodles are well coated and heated through.
07 - Remove from heat. Sprinkle with spring onions, cilantro, and sesame seeds. Serve immediately with lime wedges on the side.