Into a roasting tin place onion, pepper, sweetcorn,and carrot. Drizzle over 15ml oil and mix together. Place 450g lean pork fillet on top.
Mix together plum sauce, sweet chilli sauce and drizzle over the pork fillet. Cook in a preheated oven for 25-30 minutes. During the last 10-15 minutes of cooking, mix through the vegetables and cook for remaining time.
Serve the pork fillet cut into slices with the roasted vegetables and crispy rice noodles, or boiled egg noodles.