Preheat the oven to 180°C.
Roll out the shortcrust pastry evenly to about 3-4 mm thick between two sheets of baking paper or on a floured work surface. Line your cake tin with it.
Prick holes in the dough with a fork and bake for 20-25 minutes until a light golden brown, crispy crust.
Let the cake base cool completely and then place it on a cake stand.
Whip the cold cream with the icing sugar, vanilla sugar, and vanilla extract until stiff peaks form.
Important: Only spread the cake with the whipped cream about 30 minutes before serving, so the crust remains crispy.
Spoon the cream into a nice, high layer on the cake base.
Decorate with Maraschino cherries or the fruit of your choice.
Stick the candle in the cake, sing loudly, and enjoy!