1 c. buttermilk
1 pkg. instant vanilla pudding
1 (14 oz.) can pineapple, drained
1 (11 oz.) can mandarin oranges, drained
2 to 3 c. miniature marshmallows
1 (8 oz.) carton Cool Whip
12 shortbread cookies, crushed

Mix ingredients together in order as listed. Extra mandarin oranges or crushed cookies may be used to decorate the top of salad.