In a small bowl, stir together the graham cracker crumbs and butter. Set aside 1/2 cup for topping, and press the rest of the crumbs into the bottom of a 7x11 inch baking pan. Set aside to chill in the refrigerator.
In a small bowl, beat the cream cheese, sugar and milk until smooth. Spread evenly over the chilled crumb layer. Spread the pie filling over the cream cheese layer, and chill while preparing the whipped cream. In a chilled bowl, whip the heavy cream, sugar and vanilla until stiff, spread over the top of the blueberry layer. Sprinkle the top with the remaining graham cracker crumb mixture and keep chilled until serving time.