Perfect Peppermint Patties Recipe

In a bowl combine confectioners sugar, butter or margarine, peppermint extract and vanilla extract. Add evaporated milk and mix well. Roll into 1" balls and place on a waxed paper-lined cookie sheet. Chill for 20 minutes. Flatten with a glass to 1/4 inch thickness. Chill for 30 minutes. In a double boiler or microwave safe bowl, melt chocolate chips and shortening. Dip patties and place on waxed paper to harden. Yield about 5 dozen small patties.