01 - In a mixing bowl, beat powdered sugar, softened butter, peppermint extract, heavy cream, and a pinch of salt until a smooth, pliable dough develops. If sticky, incorporate additional powdered sugar gradually until the dough becomes workable.
02 - Portion dough into small balls, approximately 2 teaspoons each, and flatten into 1/4-inch thick discs. Arrange in a single layer on a parchment-lined baking sheet. Freeze for 20 to 30 minutes until firm.
03 - In a heatproof bowl set over gently simmering water, melt dark chocolate with coconut oil if using, stirring frequently until silky and smooth.
04 - With a fork, dip each peppermint disc into the melted chocolate, allowing excess to drip off before placing back on the parchment-lined sheet.
05 - Chill the coated patties in the refrigerator for 15 minutes or until the chocolate is fully set.