Process all ingredients into a shortcrust pastry and let stand in the refrigerator for 2 hours.
Preheat the oven to 200 degrees.
Shape the dough into a long roll, cut an even slice from it and shape it into balls. Use the handle of a wooden spoon to make a small indentation in each ball. Place the ball on baking sheets lined with baking paper and bake on the middle rack for 15-20 minutes.
Sprinkle cold Krapferl with powdered sugar.
Heat the jelly and fill the recess in each donut with it.
Let them dry for 1 day before they can be layered in a cookie jar.