Preheat oven to 350 degrees F. Line a baking sheet with parchment paper. Set aside.
In a large bowl, whisk together flour, baking powder, salt, cinnamon, pumpkin pie spice, and sugar.
Add chilled butter. Cut into dry mixture using a pastry bender (or fork or your fingers) until mixture resembles coarse sand.
Make a well in the center of the dry ingredients. Add pumpkin puree and fold to combine until add the dry ingredients have been hydrated.
Turn out dough onto a lightly floured surface. Pat the dough into a circle about 1 inch thick. Using a sharp knife (or a bench scraper) cut the circle into 8-10 equal slices.
Transfer slices to prepared sheet tray. Brush each scone with a little heavy cream and sprinkle generously with turbinado sugar. Bake for 20-30 minutes until golden brown in color. Let cool on sheet tray for about 5 minutes. Once cool to the touch, enjoy! Or wait until scones are about room temperature and pour glaze over scones.