Grease 9x13 pan with non-stick butter spray
In a medium size bowl mix graham cracker crumbs, powdered sugar and butter with a spoon
Place mixture in the bottom of the baking pan. Distribute the mixture evenly and press down and firmly with your fingers to "pack it" along the bottom and sides of the pan.
Turn oven to "broil" - put pan into oven and keep an eye on it, apx. 2 minutes.
Let them cool completely
Cut and serve - enjoy!