PREHEAT oven to 350°F. Prepare and bake cake mix as directed on package in two 9-inch round baking pans. Cool 5 min.; remove from pans. Cool completely on wire racks.

MICROWAVE chocolate and butter in small microwaveable bowl on HIGH 2 min. or until butter is melted. Stir until chocolate is completely melted. Cool 5 min. (I recommend to cool in the refrigerator so that it thickens up a little before putting on top of the cake)

BEAT cream cheese and sugar in large bowl with electric mixer on medium speed until well blended. Gently stir in whipped topping and crushed cookies. Place one cake layer, top-side down, on serving plate. Spread top of layer evenly with cream cheese mixture. Cover with remaining cake layer, top-side up. Spoon chocolate glaze over top of cake. Let stand until set. Store in refrigerator.