01 - Beat powdered sugar, butter, peppermint extract, heavy cream, and salt in a mixing bowl until a smooth, pliable dough forms. Add additional powdered sugar as needed to achieve workable consistency.
02 - Portion dough into small balls, approximately 2 teaspoons each, and flatten into 1/4-inch thick discs. Arrange on a parchment-lined baking sheet.
03 - Freeze the formed discs for 20 to 30 minutes until firm.
04 - In a heatproof bowl set over simmering water, melt dark chocolate and coconut oil, stirring until completely smooth.
05 - Using a fork, immerse each chilled peppermint disc in melted chocolate, allowing excess to drip off. Return coated patties to the parchment-lined sheet.
06 - Refrigerate patties for 15 minutes or until chocolate shell is firmly set.