1 sm. pkg. Jello pistachio instant pudding mix
1 can crushed pineapple, undrained
1 c. miniature marshmallows
1/2 c. chopped walnuts
4 oz. Cool Whip

Sprinkle pudding mix over pineapple. Let set 10 minutes. Fold in nuts and marshmallows and Cool Whip. Let set 24 hours.