01 - In a mixing bowl, combine powdered sugar, unsalted butter, peppermint extract, heavy cream, and a pinch of salt. Beat until a smooth, pliable dough forms. If the mixture remains sticky, incorporate additional powdered sugar in small increments until workable.
02 - Scoop out portions of dough, approximately 2 teaspoons each, and flatten into discs about 1/4-inch thick. Place evenly on a parchment-lined baking sheet.
03 - Transfer the baking sheet to the freezer and chill the discs for 20–30 minutes, or until firm.
04 - In a heatproof bowl set over simmering water, melt chopped dark chocolate with coconut oil, if using, stirring until smooth and glossy.
05 - Using a fork, dip each firm peppermint disc into the melted chocolate, allowing excess to drip off before returning to the parchment-lined sheet.
06 - Place coated patties in the refrigerator for 15 minutes until the chocolate is fully set.