
Add the softened cream cheese to a large bowl. Sift the powdered sugar over the top. With a handheld electric mixer (or in the bowl of a stand mixer with the paddle attachment) beat on medium speed for 1 minute, until well combined.
Add the pumpkin puree, pumpkin pie spice, cinnamon, and vanilla. Beat for 1 more minute until fully combined.
Fold in the whipped cream. (You can also use 2 cups of frozen, thawed whipped topping instead of the freshly whipped cream.)
Pour the topping into the crust and spread into an even layer.
Refrigerate for at least 8 hours or up to 48 hours until the filling is set and sliceable. Serve slices topped with another dollop of whipped cream.