Preheat the oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a large bowl, mix flour, sugar, baking powder, baking soda, cinnamon, nutmeg, ginger, and salt.
Cut in cold butter until the mixture resembles coarse crumbs.
In a separate bowl, whisk together pumpkin puree, heavy cream, egg, and vanilla extract.
Pour the wet ingredients into the dry ingredients and stir until just combined.
Turn the dough onto a floured surface and gently knead it a few times.
Pat the dough into a circle about 1 inch thick.
Cut into 8 wedges and place them on the prepared baking sheet.
Bake for 20 minutes or until golden brown.
Let cool slightly before drizzling with glaze.