Instant Pistachio Salad

1 (20 oz.) can crushed pineapple, drained

1 (3 oz.) pkg. instant pistachio pudding mix

1 (8 oz.) container Cool-Whip

1/2 (10 oz.) pkg. miniature marshmallows

In a large bowl, combine the pineapple and dry pistachio pudding mix. Fold in thawed Cool-Whip and marshmallows until well mixed. Refrigerate until chilled and serve.