1 (15 oz.) can crushed pineapple
1 (15 oz.) can chunk pineapple
1 sm. pkg. pistachio instant pudding
2 c. miniature marshmallows
1 (9 oz.) pkg. Cool Whip
1 sm. can mandarin oranges (optional)

Pour both undrained cans of pineapple into bowl. Sprinkle pudding mix over and gently fold in. Add marshmallows and drained oranges. Add most of container of Cool Whip to get desired consistency. Chill.