Peppermint Patties

I have to share this recipe even if for most the candy making is over till next year. This will be one that i will use all year!If you like York patties like i do,you will love these! Our son Kevin asked why buy the York patties??? They even look like the boughten ones! :) :)
1 lb.powdered sugar;3Tbsp.butter,softened;2 to 3 tsp.peppermint extract;1/2tsp.vanilla extract;1/4c. evaporated milk;2c.(12ounces)semisweet chocolate chips;2Tbsp.shortening-In a bowl,combine first 4 ingredients.Add milk & mix well.Roll into 1-inch balls & place on a waxed paper-lined cookie sheet.Chill for 20 minutes.Flatten with a glass to 1/4 in.;chill for 30 minutes.In a double boiler or microwave-safe bowl,melt chocolate chips & shortening.Dip patties;place on waxed paper to harden.Yield:about 5 dozen. THE BEST!!!!!!NOTE- Paul wanted to know why i didn't make mine bigger!!:) :)