Preheat the oven to 350°F (175°C). Grease the 9x13-inch baking dish or line it with parchment paper for easier removal later.
In a mixing bowl, combine the graham cracker crumbs, melted butter, granulated sugar, and ground cinnamon. Mix until the crumbs are evenly coated.
Press the crust mixture firmly into the bottom of the prepared baking dish to create an even layer. Bake for 10 minutes, then remove and let cool slightly.
In another mixing bowl, beat the softened cream cheese with an electric mixer until smooth and creamy.
Add the granulated sugar, pumpkin puree, eggs, vanilla extract, ground cinnamon, nutmeg, ginger, and salt. Beat until fully combined and smooth.
Pour the pumpkin cheesecake filling over the cooled crust, smoothing the top with a spatula.
Bake the bars in the preheated oven for 30 minutes or until the edges are set, and the center slightly jiggles when shaken.
Remove from the oven and let cool to room temperature, then refrigerate for at least 2 hours before cutting into bars.
For added flavor, consider topping the bars with whipped cream and a sprinkle of cinnamon before serving.