Here's a recipe that I make for Thanksgiving, Christmas, and Easter. I received it from a relative in 1976. I hope you enjoy it!
1 can crushed pineapple
3 or 4 cups miniature marshmallows
1 package pistachio instant pudding
1 large carton Cool Whip®
1 cup nut pieces
Mix pineapple, juice and all, with marshmallows in a large bowl. Put Cool Whip in large bowl and sprinkle pudding mix over it; mix well, by folding gently. Add Cool Whip to pineapple. Add nuts and fold together. Do not whip! Place in desired pan or bowl and refrigerate.