Preheat the convection oven to 200° C.
Place the paper cups into the muffin mould.
Pour the dry ingredients into a bowl: sift two times the flour twice with the baking powder, add the sugar and a pinch of salt, mix and make a mound with a well in the centre.
In another bowl beat the egg with a fork, add the skimmed milk, oil and mix. Add the liquid mixture in the centre of the fountain, mix quickly with the fork until the mixture forms a lumpy dough.
Pour the mixture into the paper cups until they are ¾ full.
Cook for 15-20 minutes, or until they will be well leavened and golden on the surface.
Open the oven and leave to cool for 5 minutes, take them out.