For hazelnut biscotti, beat butter and eggs until thick and creamy. Add sugar and Sambucca/Anisette and mix well.
Sift together flour and baking powder and fold into butter-egg mixture with nuts. Cool slightly and spread on a baking sheet. Bake in a preheated oven at 190 °C for about 25 minutes.
Let cool and cut into slices. Place on baking sheet again and let brown for 8-10 minutes, like rusks. Turn over and repeat. Layer the hazelnut biscotti in tins and store in a dry place.
Preparation Tip:
Instead of nuts, you can also use almonds for the biscotti.