1 (20 oz.) can crushed pineapple
1 (3 3/4 oz.) box instant pistachio pudding and pie filling
1 (8 oz.) container Cool Whip
3/4 c. chopped walnuts

In large bowl stir pineapple and pudding together until pudding dissolves. Add chopped walnuts; mix again; fold in Cool Whip. Place in refrigerator until ready to serve.