Place an empty non-stick frying pan on the hob at a low heat. Leave for two minutes to reach temperature, then raise the heat and pour the 3 tablespoons of caster sugar into the pan. Keep the sugar moving with a wooden spatula while it melts and turns to a blond caramel. As soon as it is all liquid, before the sugar can burn, add the four thinner slices of pineapple to the pan. SautÃÂ© the pineapple in the sugar for around thirty seconds and turn them with the spatula. When this side is done, turn off the heat and remove the slices from the pan, placing them on a non-stick baking sheet. Place in the oven for ten to fifteen minutes until dry to the touch Ã¢ÂÂ set a timer for ten minutes to check.