01 -
In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy. This incorporates air into the dough, making it tender.
02 -
In a separate bowl, combine the ground walnuts or hazelnuts with the preserves to create the filling.
03 -
Divide the dough into four equal portions. On a lightly floured surface, roll out each portion into a rectangle about 1/8 inch thick. Spread a thin layer of nut filling over each rectangle, leaving a small border around the edges. Roll up each rectangle to form a log.
04 -
Place the rolled cookies seam-side down on a prepared baking sheet. Bake in a preheated oven at 175°C (350°F) for 20-25 minutes, or until lightly golden.