Place the graham crackers in a food processor and pulse them into fine crumbs. Add the melted butter, granulated sugar, and brown sugar, then pulse until combined.
Spoon the crumbs into individual 9 oz (250 g) (266 ml) cups and place them in the refrigerator to set while you prepare the filling.
In the bowl of a stand mixer, beat the cream cheese with the paddle attachment until it is light and creamy.
Add the pumpkin, pumpkin pie spice, and pudding mix. Beat until fully combined, making sure to scrape down the sides and bottom of the bowl to evenly incorporate all the ingredients.
Add the sweetened condensed milk and mix again until well combined.
Change the stand mixer attachment to the whisk. On the lowest speed, whisk in the frozen whipped topping. Cover the bowl with plastic wrap and let the mixture sit in the refrigerator for about one hour to firm up.
Spoon the pumpkin mixture over the graham cracker crust in each cup. Refrigerate until ready to serve, and garnish with additional whipped topping if desired.