Spray a 9"x13" casserole dish with nonstick cooking spray. In a ziplock closed bag, crush the Oreo cookies. Set 1C of crushed Oreos for topping aside. Combine remaining crushed Oreos with the melted butter. Press the buttered Oreo's into the bottom of the prepared dish.

In a small bowl, whip the softened cream cheese with a mixer until light and fluffy. Mix in sugar, milk and 1 1/4C cool whip until well combined. Spread cream cheese mixture smoothly over the Oreo crust. Layer the pudding over the cream cheese. Spread remaining cool whip over the pudding layer. Sprinkle the reserved crushed Oreos over the top. Place in refrigerator to chill for 4 hours or overnight if possible. Serve and enjoy!