I recommend using Andes peppermint baking chips for this. They are basically peppermint flavored chocolate chips so they melt and get soft. I do not recommend using candy cane pieces because those are made of pure sugar and will caramelize and burn. If you cannot find the Andes peppermint baking chips (often found this time of year near the holiday baking aisle/chocolate chip aisle), you can always chop up peppermint bark into bite-size pieces!