First, you need to separate the egg whites from the yolks, then beat the egg whites into stiff peaks and set them aside.
Add sugar and vanilla sugar to the egg yolks and beat until foamy.
Then pour oil and milk and mix briefly.
Pour smooth flour, then baking powder and ground poppy seeds and mix everything well with a mixer.
Pour in rum flavoring and mix finally.
At the end, add egg white snow and combine everything with a whisk.
Grease and flour a 13×8 inches baking pan.
Pour the biscuit mixture into the pan and shake it well.
The biscuit is baked in an preheated oven on 400 Fahrenheit for 30 minutes.
Remove the baked biscuit from the oven and let it cool for about 10 minutes.
Spread the apricot jam on the still warm biscuit and let it cool to room temperature.
For the glaze, melt cooking chocolate with butter in a steamer.
While it is still warm, spread it on the baked cake and smooth it out.
The cake can be cut and served after two to three hours.