Heat the oven to 220c.
Microwave the potatoes for 8 minutes, halve and scoop out the flesh to use for something else. Roast the potatoes in the oven with a drizzle of oil and a pinch of salt for about 20 minutes, or until the skin is crisp and golden.
Mix the sweetcorn with the remaining ingredients and fill the skins. Put back in the oven for two minutes and serve with tomato, coriander and green chilli salad.