Watergate Salad
["1 (6 oz.) pkg. instant pistachio pudding mix", "1 medium can crushed pineapple", "1 c. miniature marshmallows", "1 c. chopped nuts (optional)", "1 (8 oz.) carton Cool Whip"]
["Pour pineapple over dry pudding mix.", "Mix well; add other ingredients.", "Mix well.", "Chill."]
["instant pistachio pudding mix", "pineapple", "marshmallows", "nuts"]