Preheat oven to 350. line baking sheets with parchment paper
MAKE COOKIES
In a medium bowl whisk flour, cocoa powder, baking soda, baking powder and salt, set aside.
In a large bowl beat butter and both sugars until light and fluffy about 2 to 3 minutes
Add egg and vanilla and beat in.
Add flour mixture and mix in well but don't over mix dough is thick
Add chocolate chips and mix in
Roll dough into 1 inch balls and place on prepared pan 2 inches apart
Bake about 8 to 10 minutes until just set, This is very important, do NOT over bake or they will become crunchy not chewy when cool. Cool in pan 5 minutes than transfer to wire rack to cool completely.
MAKE PEPPERMINT CREAM FILLING
Beat utter, confectioners sugar, cream and peppermint extract until light and fluffy.
Divide filling evenly on half of cookies the top with another cookie to make a sandwich.
To keep filling from sqeezing it when eating I freeze these cookies individually and remove from freezer 15 minutes before serving. If serving all at one time refrigerate 1 hour to firm filling up a bit. They freeze great.
