Will make about 20 small cupcakes. Preheat your oven to 170'C.
Gather up your supplies!
Mix butter, powdered sugar, vanilla sugar and salt for about 2mins.
Add condensed milk, keep mixing.
Add eggs and keep mixing till your mixture is pale.
In the end the mixture should look like this.
Fill up cupcake cases and bake for 20 min, till they look golden brown.
You can put your favourite icing on top, but they are really good without it too.