crush the remaining cookies into small bits. It works best if you pour the into a large Ziplock bag, seal it and pound away. combine the crumbs with a stick of melted butter in the bottom of a 9x13 pan. chill 20 minutes to set the crust.
Mix 1/2 bowl of Cool whip, cream cheese and powdered sugar in a bowl. spread this over the chilled Oreo layer and chill it for 20 minutes.
Prepare the chocolate pudding according to package directions on the box. spread this over the cream cheese layer and chill for 20 minutes.
Spread the remaining portion of cool whip over the pudding layer then crumble the six cookies that were set aside over the top.