1 stick butter
1 1/2 c. flour
1/2 c. walnuts

In a 7 x 11 pan, bake for 15 minutes in 400 degree oven, cool.

8 oz. cream cheese
1 c. confectioner's sugar
8 oz. Cool Whip (save some for top)

Spread and refrigerate for 1/2 hour.

2 pkgs. pistachio instant pudding
2 3/4 c. cold milk

Let set for 1 minute. Pour over cream cheese mixture and spread with some of the Cool Whip.