Beat the eggs, powdered sugar and vanilla sugar until foamy and fold in the flour.
Pour the mixture into a well greased and floured springform pan.
Bake in the oven (hot air) at 180 °C for about 30 minutes.
Beat the eggs, powdered sugar and vanilla sugar until foamy and fold in the flour.
Pour the mixture into a well greased and floured springform pan.
Bake in the oven (hot air) at 180 °C for about 30 minutes.