Preheat the oven to 325°F (160°C). Grease a 9-inch springform pan.
In a medium bowl, combine the graham cracker crumbs, melted butter, brown sugar, and ground cinnamon. Mix until the crumbs are well-coated.
Press the crumb mixture firmly into the bottom of the springform pan to create an even crust layer. Bake for 10 minutes, then remove from the oven and let cool.
In a large mixing bowl, beat the softened cream cheese with an electric mixer until smooth and creamy.
Gradually add the granulated sugar, mixing until fully incorporated.
Add the pumpkin puree, vanilla extract, and pumpkin pie spice. Mix well until everything is blended.
Add the eggs one at a time, mixing on low speed after each addition until just combined.
Sprinkle in the flour and salt, mixing until just incorporated. Do not overmix.
Pour the cream cheese mixture over the cooled crust in the springform pan.
Bake for 55-60 minutes, or until the center is set and slightly jiggly (it will firm up as it cools).
Turn off the oven and leave the cheesecake inside for an additional hour to cool gradually.
Once cooled, remove the cheesecake from the oven and let it cool completely at room temperature. Then refrigerate for at least 4 hours or overnight for best results.
Before serving, top with whipped cream and a sprinkle of cinnamon if desired.
Notes
Serve slices on dessert plates, drizzled with caramel sauce and topped with candied pecans for an added festive touch.