01 - Combine powdered sugar, butter, peppermint extract, heavy cream, and salt in a mixing bowl. Mix with an electric mixer or sturdy spatula until a smooth, pliable dough forms. If dough is sticky, incorporate additional powdered sugar until it becomes manageable.
02 - Portion out small balls of dough using approximately 2 teaspoons for each. Flatten into discs about 1/4-inch thick and arrange on a parchment-lined baking sheet.
03 - Transfer the baking sheet to the freezer and chill the discs for 20 to 30 minutes, or until they are firm.
04 - Place chopped dark chocolate and coconut oil into a heatproof bowl. Set over a pot of gently simmering water and stir until chocolate is fully melted and glossy.
05 - Using a fork, dip each chilled peppermint disc into the melted chocolate, allowing excess to drip off. Place finished patties onto the parchment-lined sheet.
06 - Chill coated patties in the refrigerator for 15 minutes, or until the chocolate is firm.