Prepare a shortcrust pastry from the ingredients listed and refrigerate for about 45 minutes. Then roll out the dough thinly in portions on a well-floured board, sprinkle the dough lightly with flour, and cut out rectangular biscuits. Place these on a baking tray lined with baking paper and bake lightly at 160 ° for 8-10 minutes.
When cooled, put two biscuits together with any jam and spray on a waffle pattern with the glaze.