In a medium bowl, mix together graham cracker crumbs, pumpkin pie spice, cinnamon, and melted butter. Mix well until well combined.
Pour into an 8x8 inch (or 9x9 inch) prepared springform pan. Pack it tightly with the bottom of a glass cup. Freeze it for 15 minutes.
Make The Cheesecake Filling
Add heavy whipping cream to a medium bowl. Using an electric mixer beat the heavy whipping cream until stiff peak forms. Set it in the fridge.
In a large bowl, beat cream cheese until smooth. Add pumpkin puree, sugar, vanilla, cinnamon, and pumpkin pie spice. Beat with an electric mixer until smooth and all combined.
Carefully fold the whipped cream into the pumpkin cheesecake mixture with a rubber spatula. Don't overmix.
Assemble Pumpkin Cheesecake Bars
Carefully pour the cheesecake mixture over the graham cracker crust. Spread it evenly until smooth on top.
Cover the cheesecake and refrigerate it overnight. Freeze for one hour before serving.
Cut into 12 bars and serve it with whipped cream or caramel sauce.