01 - In a mixing bowl, beat together powdered sugar, softened butter, peppermint extract, heavy cream, and a pinch of salt using an electric mixer or sturdy spatula until a smooth, pliable dough forms. Add extra powdered sugar gradually if the dough remains sticky.
02 - Portion dough into small balls using approximately 2 teaspoons each and flatten to 1/4-inch thick discs. Arrange discs on a parchment-lined baking sheet.
03 - Freeze the shaped discs for 20 to 30 minutes until completely firm.
04 - In a heatproof bowl set over gently simmering water, melt dark chocolate and stir in coconut oil if using, stirring until fully smooth.
05 - Using a fork, dip each peppermint disc into the melted chocolate, allowing any excess to drip off. Return coated discs to the parchment-lined sheet.
06 - Refrigerate chocolate-coated patties for at least 15 minutes until the chocolate is fully set.