Line the base and sides of a 20 x 20cm slice tin.
Place chocolate buttons in a heatproof bowl over a saucepan of gently simmering water. Heat until melted and smooth. Remove from heat.
Stir in the marshmallows, turkish delight, both nuts, craisins and coconut. Mix thoroughly.
Pour into the prepared tin and sprinkle with additional coconut. Refrigerate for at least 2 hours. Cut into pieces for serving.