In a medium mixing bowl, combine the graham cracker crumbs and melted butter. Mix well until the crumbs are completely coated and the mixture resembles wet sand.
Transfer the crumb mixture to a 9-inch springform pan. Press it firmly and evenly into the bottom to form a solid crust. Place the pan in the refrigerator to chill while you prepare the cheesecake filling.
In a large mixing bowl, use an electric mixer on medium speed to beat the softened cream cheese. Continue mixing until it achieves a smooth and creamy texture, free of lumps.
Add the pumpkin puree, powdered sugar, vanilla extract, ground cinnamon, nutmeg, and ginger to the cream cheese. Beat on medium speed until all ingredients are combined and the mixture is creamy and uniform.
In a separate bowl, whip the heavy cream until stiff peaks form. Gently fold the whipped cream into the pumpkin mixture using a spatula. Be careful to fold gently to maintain the lightness and airy texture of the cream.
Carefully pour the pumpkin cheesecake filling over the chilled graham cracker crust. Use a spatula to spread the filling evenly across the surface.
Smooth the top of the cheesecake with the spatula, then cover the pan with plastic wrap. Refrigerate for a minimum of 4 hours, or overnight for the best texture and flavor.
When ready to serve, carefully release and remove the cheesecake from the springform pan. Top with additional whipped cream and sprinkle with cinnamon or crushed graham crackers for a beautiful garnish. Enjoy!