01 - Using a mixing bowl and electric mixer or sturdy spatula, blend powdered sugar, butter, peppermint extract, heavy cream, and salt until a smooth dough forms. Add additional powdered sugar if necessary for a pliable consistency.
02 - Portion dough into 2-teaspoon balls and flatten each into 1/4-inch thick discs. Arrange them on a parchment-lined baking sheet.
03 - Transfer the tray to the freezer for 20 to 30 minutes until the discs are firm.
04 - Combine chopped dark chocolate and coconut oil (if using) in a heatproof bowl. Set bowl over gently simmering water, stirring until chocolate is completely melted and smooth.
05 - Using a fork, dip each frozen peppermint disc into the melted chocolate, allowing excess to drip off. Place coated discs back onto the parchment-lined baking sheet.
06 - Refrigerate the coated patties for about 15 minutes, or until the chocolate is fully set.