Remove 5 Oreo cookies from the package and set aside. Crush all remaining cookies well and press into the bottom of a 13x9 pan.
Melt butter and pour over the top of the cookie crust. Put in refrigerator until next layer is ready.
Mix cream cheese, sugar and Cool Whip well and spread over the cookie crust.
Mix pudding as directed on package and spread on top of cream cheese mixture.
Spread remaining Cool Whip over the top.
Crush the remaining 5 Oreo cookies and sprinkle over the top.
Chill one hour and serve.