The nectarines are cut into slices.
Beat eggs and rub with sugar until dissolved.
Add the milk, the vanilla essence, the flour mixed with the baking powder, and then the oil.
Wallpaper a baking tin or a tray.
Pour the composition.
Put the nectarine slices and a cinnamon powder on top.
Place the tray in the preheated oven over medium heat (180 °) for 30-40 minutes. Be sure to check with the toothpick if it is cooked.
Powder with powdered sugar!
Allow to cool, then portion and serve.