Better Than Sex Cake

From a Marshall Fields cookbook

1 C all-purpose flour
1 C chopped nuts
1/2 C butter, softened
8oz cream cheese, softened
1 C powdered sugar
2 (8oz) cartons frozen whipped topping, thawed
3 C milk
2 (3.5oz) pkgs instant chocolate pudding mix

Heat oven to 350. In medium bowl, combine flour, nuts and butter; mix thoroughly. Press on bottom of greased 9x13" baking dish. Bake 20 minutes. Cool on wire rack. In small mixer bowl, combine cream cheese, powdered sugar and 1 carton whipped topping; beat until well combined. Spread over cooled layer in baking dish. In large mixer bowl, combine milk and chocolate pudding mix; beat 3 minutes at low speed until thick and glossy. Spread evenly over cream cheese layer. Refrigerate until pudding is set. Spread remaining whipped topping over chocolate layer. Refrigerate until serving time.