In a medium mixing bowl or the bowl of a stand mixer fitted with a paddle attachment, blend together the sweetened condensed milk, peppermint extract and powdered sugar. Add the food coloring at this step if you desire a color. Mix at a medium speed for 2-3 minutes or until mixture is smooth with no lumps. Dough will be stiff and form patties, but not dry and crumbly.
Line a large rimmed baking sheet with parchment paper. Roll the dough into approximately 28 1-inch balls. Flatten each with the palm of your hand to make the filling for patties. Allow them to dry at room temperature for at least 2 hours, flipping once.
Right before melting the chocolate place the peppermint pattie in the refrigerator or freezer for 15-20 minutes. Them being cold will help the chocolate grab and set.
Melt the chocolate in double boiler. Dip the patties into the chocolate, tapping on the side to get excess off. Place them onto a parchment paper lined baking sheet to cool. If you desire sprinkles, add them now. Place in the refrigerator for an additional 30 minutes to set.
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