BEAT the butter and sugars together until pale and creamy. Beat in the coffee, then the egg until combined.
STIR in the sifted flour and Toblerone* until mixed through. Roll tablespoons of mixture into balls.
PLACE the balls on greased baking trays and press slightly to flatten. Bake at 180°C for 10-15 minutes or until browned. Allow to cool on tray.