For the marzipan slices, cut the butter into small pieces and crumble with the flour. Add all the other ingredients and quickly knead into a smooth dough. Wrap in plastic wrap and let rest in the refrigerator for about 1 hour.
On a floured work surface, roll out the dough and cut out circles. Place these on a baking tray lined with baking paper.
Mix the egg whites with the marzipan and cane sugar until creamy and add the amaretto. Fill the mixture into a piping bag.
Pipe the marzipan mixture onto the cut-out cookies in a circle. In the middle of the cookies with a small spoon dab a little jam. Bake the marzipan slices in the preheated oven at 170 ° C for about 15 minutes.
Preparation Tip:
If the mixture is too thick for marzipan slices for piping, add a little hot water or even a little more amaretto.