Preheat oven to 375 degrees F.
In a mixing bowl, combine cookie mix, butter, egg, and 1/2 cup chocolate chips. Stir to form dough. Drop by rounded tablespoons onto ungreased cookie sheet. Bake in preheated oven for 10 to 14 minutes. Cool for 1 minute on cookie sheet before transferring to wire rack. Cool cookie completely, and then freeze for a minimum of 1 hour before completing ice cream sandwiches as directed.
Soften ice cream on the counter for 10 minutes prior to making sandwiches. Remove cookies from freezer, place a scoop of ice cream on the backside of 1 cookie. Sandwich with another cookie and carefully press together until ice cream reaches the edge of the cookies. Roll edges in remaining chocolate chips. Freeze for 10 minutes, then serve.
Recipe courtesy of Sandra Lee