Pistachio Dessert
["1 box pistachio pudding", "1 (8 oz.) can crushed pineapple", "1 (8 oz.) container Cool Whip", "walnuts", "miniature marshmallows"]
["Combine pudding and pineapple first; add remaining ingredients."]
["pistachio pudding", "pineapple", "walnuts", "marshmallows"]