1 c. buttermilk
1 pkg. vanilla instant pudding
1 (8 oz.) container Cool Whip
1 can mandarin oranges, drained
18 fudge-striped cookies, broken up

Place buttermilk and instant pudding in a bowl and beat. Add Cool Whip and beat. Stir in mandarin oranges with a spoon. Refrigerate. When ready to serve, add broken up cookies.