Lightly grease a 9" or 10" round springform pan with cooking spray. Set aside.
In a medium bowl, combine the gingersnap crumbs, the brown sugar and melted butter and stir until crumbs are moistened. Pour the moistened crumbs into the bottom of the prepared pan and pat in an even layer for your crust. Freeze for 20 minutes while you prepare the filling.
In the bowl of a stand mixer, cream together the cream cheese, brown sugar, and granulated sugar together until light and fluffy, about 1 minute. Mixture should be smooth. Scrape down the sides of the bowl as needed. Add in the pumpkin puree, vanilla and spices and beat until combined. Set aside.
In another medium bowl, whip the heavy whipping cream and confectioners' sugar together on high speed until stiff peaks form, about 5-7 minutes. Fold the whipped cream into the pumpkin mixture gently until fully combined and no whipped cream streaks remain.
Pour the pumpkin filling into the crust and smooth out the top. Cover with plastic wrap and refrigerate until firm, about 6 hours or overnight (preferable). Just before serving, garnish with more fresh whipped cream and pumpkin candies.