1. Put the dark chocolate and cream in an ovenproof glass bowl. Microwave for 30 seconds, stir then microwave for another 30 seconds. Stir until the chocolate has melted – if it doesn’t melt completely, microwave for another 30 seconds and stir again.
2. Stir the chopped Crunchie chocolate bar into the mixture and chill in the fridge for at least 2 hours or until set.
3. Take spoonfuls of the mixture and roll into balls. Roll the balls in the chocolate powder to coat and keep in the fridge until ready to serve.