1 c. buttermilk
1 (8 oz.) Cool Whip
1 (3 1/2 oz.) pkg. instant vanilla pudding
1 (11 oz.) mandarin oranges
1 sm. can crushed pineapple
1/2 pkg. Fudge striped cookies

Mix dry pudding into Cool Whip and buttermilk, add mandarin oranges and pineapple. Crumble cookies and blend into the above. Chill well.