Process the graham crackers and pecans in a food processor or blender until they are fine crumbs. Add the butter and sugar and process again to combine. Press into a 9x13-inch baking dish and freeze for 10 minutes while preparing the middle layer.

Beat cream cheese, vanilla and powdered sugar in a medium bowl using an electric mixer until smooth. Add one container of thawed Cool Whip, beating until smooth. Spread over the crust, making sure to go all the way to the edges of the pan.

Spoon the blueberry pie filling over the cream cheese layer. Dollop the remaining container of Cool Whip over the blueberry layer, carefully spreading it over the top in an even layer. Sprinkle with the remaining pecans.

Chill in the fridge for 2+ hours or overnight to set up. Slice and serve.