Watergate Pistachio Dessert
["1 large container Cool Whip", "1 large box instant pistachio pudding", "1 c. small marshmallows (optional)", "1 large can crushed pineapple, undrained"]
["Mix in a bowl, pudding, marshmallows and pineapple.", "Fold in Cool Whip until completely mixed.", "Chill and serve."]
["marshmallows", "pineapple"]