I always start by beating the softened cream cheese on its own for about a minute. This step matters more than people think, because it removes any lumps before the pumpkin joins the party. If your cream cheese is even slightly cold, give it a few extra seconds under the mixer until it looks completely smooth and fluffy.
Next, I add the pumpkin puree, powdered sugar, pumpkin pie spice, vanilla, and salt right into the same bowl. I mix on low speed first so the powdered sugar doesn't fly everywhere, then increase the speed until the mixture turns a uniform, pale orange color with no streaks left.
Once the wet mixture looks even, I switch to a rubber spatula and fold in the graham cracker crumbs by hand. This keeps the crumbs from turning into paste, which can happen if you leave the mixer running too long. The dough should look thick, slightly sticky, and easy to scoop.
I always cover the bowl and pop it in the fridge for at least two hours. This step is non-negotiable for me, because a warm mixture is nearly impossible to roll into neat balls. If I'm short on time, thirty minutes in the freezer works as a shortcut.
Once chilled, I use a small cookie scoop to portion the dough, then roll each piece between my palms into a smooth ball. I keep a small bowl of water nearby to dampen my hands slightly, which stops the mixture from sticking to my fingers.
I melt the chocolate wafers in the microwave in 20-second bursts, stirring between each one so the chocolate never scorches. Using a fork, I dip each truffle in, tap off the excess, then set it back on the parchment-lined tray to set.
While the chocolate coating is still soft, I dust the tops with a pinch of pumpkin pie spice or a few sprinkles. This is purely optional, but it makes the truffles look like they came from a bakery display case instead of my kitchen counter.