Preheat oven to 350 degrees.
Grease and lightly flour jelly roll pan.
Beat cake mix, water, oil, and eggs in large bowl on low speed 30 seconds.
Beat on medium speed 2 minutes.
Pour into pan.
Bake 25 - 33 minutes or until toothpick inserted in center comes out clean.
Cool completely.
Fold crushed cookies into whipped topping.
Cut cake crosswise in half.
Remove one cake half from pan using wide spatula to lift cake; place on serving plate.
Spread cake with half of the whipped topping mixture.
Top with remaining half of cake; spread with remaining whipped topping mixture.
Garnish with cookie pieces.
Cover and refrigerate remaining torte.