Bring the cream just to the boil in a pan. Turn off the heat and stir in the chocolate. Stir until melted, then add the peppermint. Cool, then chill until the mixture is solid, about 2-3 hrs.
Scoop out teaspoons of the mixture and roll into small walnut-size balls with your hands, then roll in icing sugar. They will keep chilled for 3 days or freeze for up to 1 month.