1.Preheat oven to 350°F.

2.In a medium bowl, combine the melted butter, flour, and 3/4 cup nuts. Press mixture into a 9" x 13" baking dish. Bake 10 to 12 minutes, until a firm crust forms; let cool.

3.In a medium bowl, whisk together pudding mix and milk until thickened; set aside. In another medium bowl, combine cream cheese, confectioners' sugar, and half of the whipped topping; mix well.

4.Using a wet table knife, spread cream cheese mixture over top of cooled crust. Spoon chocolate pudding mixture over top of cream cheese mixture then top with remaining whipped topping. Sprinkle remaining 1/4 cup walnuts over top.

5.Cover and chill overnight, or at least 6 hours. Refrigerate any leftovers.