1 (9 oz.) Cool Whip
1 (3 3/4 oz.) size pistachio instant pudding
1 can (20 oz.) crushed pineapple
1/2 c. chopped nuts
1 c. miniature marshmallows

Mix Cool Whip and pudding mix together until blended. Drain off some pineapple juice and fold in Cool Whip mixture along with marshmallows and nuts. Spread into pan and chill.