Preheat your oven to 325°F (163°C). Line a muffin tin with paper liners or lightly grease it with cooking spray.
In a medium bowl, combine the graham cracker crumbs, granulated sugar, and melted butter. Mix until the crumbs are evenly coated.
Press about 1 tablespoon of the crumb mixture into the bottom of each muffin cup to form a crust. Bake for 5 minutes, then remove from the oven and let cool slightly.
In a large mixing bowl, beat the softened cream cheese with an electric mixer until smooth and creamy.
Add the pumpkin puree, brown sugar, eggs, vanilla extract, cinnamon, nutmeg, ginger, and salt to the cream cheese. Beat until well combined and smooth.
Pour the pumpkin cheesecake filling over the cooled crusts in the muffin tin, filling each cup about ¾ full.
Bake for 20-25 minutes, or until the edges are set and the centers are slightly jiggly.
Remove from the oven and let cool at room temperature for about 30 minutes. Then, refrigerate for at least 2 hours to set completely.
Serve chilled, and enjoy your mini pumpkin cheesecakes!