1 box pistachio instant pudding
1 (No. 2) can crushed pineapple (do not drain)
1 (9 oz.) carton Cool Whip
1 c. mini marshmallows
1/2 c. walnuts

Mix crushed pineapple with syrup in the pistachio pudding mix. Add Cool Whip. Add marshmallows and walnuts. Mix lightly. Refrigerate.