Stir the graham cracker crumbs, granulated sugar, and melted butter together until evenly moistened.
Press the crumb mixture firmly and evenly into the bottom of a 9 × 13-inch pan. Refrigerate for 30 minutes.
Beat the softened cream cheese, powdered sugar, vanilla, and half of the whipped topping until smooth.
Spread the cream cheese mixture evenly over the chilled crust.
Spoon the blueberry pie filling over the cream cheese layer and spread it gently to the edges.
Top with the remaining whipped topping and sprinkle with extra graham cracker crumbs if desired.
Cover and refrigerate for at least 2 hours before slicing and serving.