1 sm. pkg. pistachio pudding (instant)
1 (20 oz.) can crushed pineapple, undrained
8 oz. Cool Whip
1/2 c. chopped nuts
1/2 c. miniature marshmallows

Mix dry pudding in undrained pineapple; add Cool Whip and blend. Add nuts and marshmallows. Refrigerate overnight to flavor.