Step 1In the bowl of a stand mixer fitted with the paddle attachment, beat together the coconut oil, lemon juice, peppermint extract and salt until combined. Slowly beat in the powdered sugar to form a thick, crumbly filling. If the filling feels too dry and will not clump together, add water, a tablespoon at a time, to moisten.
Step 2Form the filling into a disk, cover with plastic wrap and refrigerate until the dough is firm, 1 to 2 hours.
Step 3Dust the filling well with powdered sugar and place it between two large sheets of parchment or wax paper. Roll the filling to a thickness of about 1/4-inch. Dust a cookie or biscuit cutter with powdered sugar and cut the filling into shapes. Re-roll the filling and cut again as needed. Place the shapes on a parchment-lined rimmed baking sheet or pan (place a sheet of parchment between each layer of cutouts), wrap the sheet in plastic wrap and freeze until the cutouts are frozen solid, preferably overnight.
Step 4Melt the chocolate chips in a large microwave-safe bowl, stirring every 20 to 30 seconds until evenly melted. If the melted chips feel a little too thick, stir in a little coconut oil to thin the melted chocolate.
Step 5Remove just a few cutouts at a time (keep the rest of the filling frozen), and dip them, one at a time, in the melted chocolate. Tap the candy a few times to remove excess chocolate and place on a parchment- or wax paper-lined baking sheet. Repeat, removing a few frozen fillings and coating with chocolate, until all of the patties are made. Refrigerate the trays, uncovered, until the chocolate is hardened before serving.