Preheat oven to 325°F and line a 5x5-inch baking dish with parchment paper.
Combine graham cracker crumbs, melted butter, and sugar. Press into the bottom of the baking dish.
Mix pumpkin puree, sweetened condensed milk, egg yolk, cinnamon, nutmeg, ginger, and salt.
Pour pumpkin mixture over the crust and spread evenly.
Bake for 20-25 minutes until the filling is set.
Cool, cut into squares, and top with whipped cream. Serve and enjoy!