For the Bad Ischl cookies, quickly process all ingredients into a shortcrust pastry and refrigerate for a while.
Then roll out the short pastry to the thickness of the back of a knife and cut out. Cut out half of the cookies with a hole in the center, the other half without a hole. Since the cookies will be filled, it is important to use the same shape.
Place the Bad Ischler cookies on a baking sheet lined with baking paper and bake at moderate heat, 160 degrees Celsius, for about 10-12 minutes until light brown.
After baking, brush the cookies with jam, assemble and sprinkle with powdered sugar. To store the Bad Ischler cookies, put them in a tin and seal well.