1/2 stick softened butter
8 oz. cream cheese
1 c. powdered sugar
1 lg. pkg. Oreo cookies, crumbled
2 sm. pkg. vanilla instant pudding
3 1/2 c. milk
16 oz. Cool Whip

Blend first 3 ingredients together in large bowl. In medium size bowl mix pudding and milk until thick. Add pudding mix and Cool Whip, gently folding in Cool Whip. Make layers starting with 1/3 to 1/2 of cookies. Pour over some of pudding mix; then another layer of cookies, then another layer of pudding mix.