1 (15 oz.) pkg. Oreos
2 pkg. pistachio pudding
1/3 c. butter, melted
1 1/2 c. milk
9 oz. Cool Whip
1 qt. vanilla ice cream, softened

Crumble cookies (I use a little food chopper). Keep out 1 full cup. Mix crumbled cookies with melted butter and pat into a 13 x 9 pan. In a bowl, mix both packages of pudding with the milk. Stir in softened ice cream. Spread over crumbled cookies in pan. Chill until firm, then spread Cool Whip over top and sprinkle with the remaining 1 cup of crumbled cookies.