01 - In a medium bowl, beat powdered sugar, softened butter, heavy cream, peppermint extract, and salt until smooth and pliable. Add additional powdered sugar if too sticky.
02 - Roll the mixture into 24 small balls (about 1 teaspoon each), then flatten slightly into discs and place on a parchment-lined baking sheet.
03 - Freeze the discs for 20 minutes until firm.
04 - Melt dark chocolate and optional coconut oil in a heatproof bowl over simmering water, stirring until smooth. Remove from heat.
05 - Dip each peppermint disc into melted chocolate using a fork, tapping off excess, then place back on the parchment-lined sheet.
06 - Refrigerate chocolates for at least 20 minutes or until set.
07 - Store finished chocolates in an airtight container in the refrigerator for up to two weeks.