Sift flour, cocoa and baking powder into a bowl. Rub in butter until like fine breadcrumbs. Mix in sugar and as much Delinut cashews as you like (leaving some to roll the dough logs in afterwards), add beaten egg and mix until it forms a dough.
Bring the dough together with your hands by pressing gently until it comes together to form a firm ball of dough. Roll dough into cylinders or logs in the size you prefer. Roll to coat the logs in crushed or chopped Delinut cashews. Chill in the refrigerator and when firm slice into thin rounds.