Preheat oven to 350 degrees and line baking sheets with parchment paper.
Process graham crackers in a food processor until they are the texture of cornmeal.
In a large bowl mix graham cracker crumbs, sugar, brown sugar, baking soda and salt. Whisk to combine.
Add butter, egg, and vanilla. Lightly whisk the eggs and then fold together into a loose dough with a rubber spatula.
Using a cookie scoop (I used a 1.5 Tablespoon scoop) portion out the dough. Roll in the palm of your hands to form a ball and place on a baking sheet, spacing 2 inches apart.
Bake for 8 to 10 minutes until cookies are lightly brown.
Cool for 5 minutes on baking sheet. Transfer to wire rack and cool completely.