In a mixing bowl, beat the softened cream cheese with an electric mixer until smooth and creamy.
Add the pumpkin puree, powdered sugar, vanilla extract, pumpkin pie spice, and a pinch of salt to the cream cheese. Mix until well combined.
Gently fold in the graham cracker crumbs until evenly distributed throughout the mixture.
Using a cookie scoop or small spoon, portion out the mixture and roll it into small balls (about 1 inch in diameter) and place them on a baking sheet lined with parchment paper.
Once all the mixture is rolled into balls, place the baking sheet in the refrigerator for at least 30 minutes to firm up.
While the truffles are chilling, melt the white chocolate using a double boiler or microwaving it in short intervals (15-20 seconds), stirring in between until fully melted.
Once the truffles have chilled and the chocolate is melted, dip each truffle into the melted white chocolate, ensuring they are fully coated.
Place the coated truffles back on the parchment-lined baking sheet. You can sprinkle additional graham cracker crumbs or pumpkin pie spice on top for decoration if desired.
Refrigerate the dipped truffles for another 15-30 minutes until the chocolate has set.
Enjoy your delicious Pumpkin Cheesecake Truffles!