1Heat oven to 350°F. Spray bottom and sides of 13x9-inch pan with cooking spray.
2In large bowl, beat dry pudding mix and milk with whisk 2 minutes. Stir in cake mix and 1 cup of the crushed cookies until combined. Spread batter evenly in pan. Sprinkle chocolate chips evenly on top.
3Bake 30 to 35 minutes or until toothpick inserted in center of cake comes out clean. Cool completely in pan, about 1 hour.
4Spoon and spread whipped topping evenly over top of cooled cake. Sprinkle with remaining crushed cookies. Store covered in refrigerator.