For the chocolate nut cookies, cream butter with sugar and stir in the egg. Mix flour with baking powder and stir in.
Finally, stir in chocolate chips and chopped nuts. Chill for about 1 hour. Form small balls of about 1 cm, 30 per tray.
Flatten these balls with moistened fingers. Bake the chocolate nut cookies for approx. 8-10 min at 180°.