Pour the wet ingredients into the dry ingredients and stir until just combined. Do not overmix.
Turn the dough out onto a lightly floured surface and gently pat it into a disk about 3/4-inch thick.
Cut the disk into 8 wedges.
Place the wedges on the prepared baking sheet.
Bake for 15-20 minutes, or until puffed and lightly golden brown.
Let the scones cool on a wire rack for about 10 minutes.
While the scones are cooling, prepare the glaze: In a small bowl, whisk together the powdered sugar, 2 tablespoons of milk, and 1/4 teaspoon pumpkin pie spice until smooth. Add more milk, a teaspoon at a time, if needed to reach desired drizzling consistency.
Drizzle the glaze over the slightly cooled scones.
Let the glaze set before serving.
Notes
For a stronger pumpkin flavor, you can add an extra 1/4 teaspoon of pumpkin pie spice to the scone dough.
Ensure your butter is very cold for the flakiest scones.
These scones are best enjoyed the day they are made, but can be stored in an airtight container at room temperature for up to 2 days.