1: In a bowl, beat the whole eggs with sugar using electric whisks until frothy and pale.
2: Gradually add the oil and milk while continuing to whisk.
3: Sift in the flour and baking powder, then mix gently until everything is combined.
4: Grease or butter and flour a cake pan, then pour in the mixture.
5: Dollop the Nutella on the surface of the batter.
6: Bake in a preheated ventilated oven at 180° for about 35 minutes.
