Preheat your oven to 325°F. Line a 9x13-inch baking pan with parchment paper, leaving some overhang for easy removal.
Combine graham cracker crumbs, granulated sugar, and melted butter in a bowl. Press firmly into the bottom of the prepared pan. Bake for 10 minutes, then remove and let cool slightly.
In a large bowl, beat the cream cheese and brown sugar with an electric mixer until smooth and fluffy, about 2-3 minutes.
Add the pumpkin puree, eggs, vanilla, pumpkin pie spice, and salt. Beat on medium speed until completely combined and creamy.
Pour the pumpkin cheesecake mixture over the baked crust, spreading it evenly to the edges.
Bake for 35-40 minutes, or until the center is just slightly jiggly. The edges should be set but the middle will firm up as it cools.
Allow to cool completely at room temperature, then refrigerate for at least 4 hours (or overnight is even better). Cut into bars and serve with a dollop of whipped cream!