Blend the graham crackers and brown sugar in a food processor. Add the melted butter and pulse until it resembles wet sand. Pour into a small bowl and set aside.
Blend the pumpkin puree, cream cheese, pumpkin pie spice, vanilla extract, brown sugar, and salt in the food processor. Blend until completely smooth.
Fill a cupcake pan with paper liners and fill with the pumpkin mixture about ¾ of the way up.
Top with the graham cracker crumbs and freeze for about 2 hours or until set.
When ready to serve, remove from the freezer, remove the liner, and flip onto a plate. Top with extra whipped topping and enjoy!