Make a graham cracker crust by combining the melted butter, granulated sugar, and graham cracker crumbs. Press onto the bottom and up the sides of a 9" pie plate.
Pour milk in a cook pot, add the pudding mix, stir over heat until the pudding comes to a boil. Set aside until cool. Once completely cooled, fold in the container of Cool Whip and the coconut.
Slice the bananas into the bottom of the pie plate. Pour the pudding mixture on top of the bananas. Cover with wax paper to prevent a film for developing on the surface of the pudding. Refrigerate at least three hours.