Mix graham cracker crumbs according to package directions for a 9x13” pan using 1/3 cup butter and 1/4 cup granulated sugar.
Spray baking dish with cooking spray.
Press graham cracker mixture into the dish.
Bake at 350° for about 15-20 minutes or until crust is set.
Cool crust completely. (I usually put in the freezer to cool quickly).
Soften ice cream.
Using an electric mixer, mix the vanilla pudding with the ice cream until well blended.
Pour over cooled, baked graham cracker crust.
Cover, refrigerate approximately 1-2 hours until mixture is set.
After mixture is set, spread cool whip over top and then sprinkle with crushed Butterfingers.
(I just cut them cross-wise with a knife to get them in small pieces).
Cover and refrigerate until ready to serve.
(I prefer to freeze this and serve straight from freezer).