1 (20 oz.) can crushed pineapple, drained
1 lg. box pistachio pudding
1 (12 oz.) container Cool Whip
2 c. miniature marshmallows

Pour pineapple into a large bowl. Mix pudding with pineapple. Add container of Cool Whip to pudding and pineapple. Add 2 cups of marshmallows to mixture and refrigerate.