In a large mixing bowl, combine flour, dark brown sugar, baking powder, salt, cinnamon and pumpkin pie spice. Whisk together until incorporated.
280 grams all-purpose flour, 110 grams dark brown sugar, see notes*, 14 grams baking powder, 3 grams salt, 2 grams ground cinnamon, 4 grams pumpkin pie spice
If you don't have pumpkin pie spice on hand - here's how you can create your own at home!24 grams (3 Tablespoons) ground cinnamon4 grams (2 teaspoons) ground ginger3 grams (1 1/2 teaspoons) ground nutmeg2 grams (1 teaspoon) ground cloves2 grams (1 teaspoon) ground allspice Grate the frozen unsalted butter and add to the flour mixture. Cut in with a pastry cutter or mix with your fingers until the small pieces of butter are coated with flour and create pea-sized coarse crumbs.
113 grams unsalted butter, frozen
Next, blot the pumpkin puree with paper towel to extract the extra liquid. Continue to do so until most of the liquid is removed and you are left with 70g of pumpkin puree. This will prevent the Sourdough Pumpkin Scones from having too much liquid and baking flat.
120 grams pumpkin puree
In a medium bowl, whisk together the pumpkin puree, cold sourdough discard, a cold egg, cold heavy cream, and vanilla extract until smooth.
120 grams sourdough discard, 50 grams egg, 30 grams heavy cream, 8 grams vanilla extract
Pour the wet ingredients evenly on top of the butter mixture. Mix the scone dough with a rubber spatula until the cream mixture is combined. The dough will be crumbly with some bites of dry flour. Be careful not to over mix the dough, the flour will be incorporated in the next step.
Turn out the mixture onto a lightly floured surface and pat into a rectangle. Then, with a bench scraper, fold the dough in half, then press down to create the large rectangle again. Repeat this 3-4 times. Folding the dough helps to create all of those beautiful flaky layers!
With your hands, form the dough into an 8″ disc. Cut the soft dough into 8 equal wedges with a bench scraper or a large knife.Be careful not to slide the bench scraper when cutting the scones! This will close off the dough, which prevents the scones from getting the flaky layers. Simply press straight down and pull straight up. Place the unbaked scones on a baking sheet lined with parchment paper. Cover with a plastic lid and chill them in the fridge for at least 20 minutes while the oven preheats. This plastic lid fits perfectly over my baking sheets! Preheat the oven to 400 degrees F.
With a pastry brush, top the scones with more heavy whipping cream and sprinkle on a layer of coarse sugar, if desired.
Bake the scones for 18-23 minutes, or until the top of the scones are golden brown. Remove and place on a wire rack to cool slightly. Prepare maple glaze in the meantime!