Line a baking sheet or casserole dish with parchment paper or plastic wrap. (Parchment paper is actually better to use but I had run out!)
Melt the semi sweet chocolate. You can use a double boiler or melt in the microwave. If using the microwave method, put it on for 1 minute, then stir. Then continue to microwave 30 seconds at a time, stopping to stir each time until the chocolate is melted.
Optional: To add a bit more peppermint flavor, mix a few drops of peppermint extract into the melted semi-sweet chocolate.
Pour the chocolate on the baking sheet and spread in an even layer. Sprinkle a few candy canes.
Refrigerate the chocolate until set, about 15 minutes.
Melt the white chocolate.
Spread the white chocolate over the hardened semi-sweet chocolate. Sprinkle with lots of crushed candy canes.
Allow to set in the fridge.
Remove from baking sheet and cut into pieces.
Store in festive glass treat jars or cellophane bags.