**Prepare the Filling:** In a mixing bowl, beat the powdered sugar, softened butter, heavy cream, peppermint extract, vanilla extract, and salt until a thick, smooth dough forms.
**Shape the Patties:** Roll the dough into small balls (about 1 inch in diameter) and flatten them into discs. Place the discs on a parchment-lined baking sheet.
**Chill the Filling:** Refrigerate the patties for 30 minutes, or until firm.
**Melt the Chocolate:** In a microwave-safe bowl, melt the chocolate chips with coconut oil in 30-second intervals, stirring between each, until smooth.
**Dip the Patties:** Using a fork or dipping tool, dip each peppermint disc into the melted chocolate, ensuring it is fully coated. Let excess chocolate drip off before placing the patty back on the parchment paper.
**Set the Chocolate:** Allow the patties to set at room temperature or refrigerate them for 15-20 minutes until the chocolate hardens.
**Serve and Enjoy:** Store the patties in an airtight container in the refrigerator for up to 2 weeks.