Preheat oven to 350 degrees F. Coat a 13- x 9-inch baking dish with nonstick cooking spray.
In a medium mixing bowl, combine flour, melted butter, and chopped nuts until well combined and crumb-like. Press into the prepared baking dish and bake for 15-20 minutes, or until lightly golden brown around edges. Remove from the oven and set aside to cool.
In a separate bowl, using an electric mixer, beat cream cheese, powdered sugar, and vanilla extract. Fold in Cool Whip and stir to combine well. Spread over cooled crust.
In a clean bowl, whisk both the vanilla and chocolate pudding mix with 3 cups cold milk. Whisk together until smooth and thickened and spread over cream cheese layer. Spread remaining container of Cool Whip over the top.
Cover dish with plastic wrap and refrigerate for at least two hours or overnight.
Garnish with the grated chocolate and additional finely chopped nuts, if desired, before serving.
Source:
fromvalerieskitchen.com