In a food processor combine the cream cheese, pumpkin puree, gingersnap cookie crumbs, graham cracker cookie crumbs, powdered sugar, salt, and the pumpkin pie spice and pulse until a dough forms.
Using a 1-2 tablespoon cookie scoop, scoop out the dough, roll it in between the palm of your hands, place it on a baking sheet and freeze for 10-30 minutes or until solid enough to handle. (to make this easier use greased hands or slightly wet hands to roll the truffles.)
In a small bowl, melt the white chocolate in the microwave in 30-second increments stirring in between every time or over a double boiler.
Pull out the truffles and coat them in the melted chocolate. Place on a baking sheet, sprinkle with more crushed gingersnap cookies, and chill in the fridge to set for about 30 minutes.
Notes
If you want to make a larger batch to feed a crowd hit the x2 to double or x3 to triple this recipe!