2 c. buttermilk
2 sm. pkg. instant French vanilla pudding
2 (11 oz.) cans mandarin oranges, drained
1 (12 oz.) container Cool Whip
1/2 lb. Oreo cookies

Mix buttermilk and vanilla pudding, then drained mandarin oranges. Fold in Cool Whip. Break up cookies and mix in. Chill at least 1 hour.