Preheat oven to 450 degrees F and line a baking sheet with foil. Spray lightly with cooking spray and set aside.
In a large bowl combine flour, 2 tablespoons of sugar, baking powder, baking soda, salt, cinnamon, nutmeg, and allspice.
Add the butter, and cut in until the mixture looks like coarse crumbs.
In a separate bowl, combine the pumpkin and buttermilk and mix well.
Add the pumpkin mixture to the flour mixture and stir to combine. Use your hands or a dough hook if using a stand mixer, to gently knead the dough a few times.
Turn the dough out onto a lightly floured surface (if the dough is still a little sticky, sprinkle some flour on top) and roll out to 1-inch thickness. Use a round biscuit or cookie cutter to cut biscuits, and then place on the prepared baking sheet.
Bake for 10-12 minutes, or until lightly golden. Allow to cool slightly before serving.
Serve with Maple cinnamon butter!