Three Layer Peppermint Bark
Meanwhile, combine the dark chocolate, cream, and peppermint extract in a saucepan. Warm over -low heat, stirring frequently, until the mixture is just melted and smooth.
Cool to barely lukewarm, about 5 minutes and pour the dark chocolate mixture over the white chocolate rectangle.
Using a spatula chocolate in an even layer.
Chill until very cold , which is about 25 minutes.
Rewarm the remaining white chocolate over barely simmering water and then pour the white chocolate over the firm dark chocolate layer, using your spatula to spread it to cover.
Sprinkle with remaining crushed candy canes.