Preheat the oven to 400°F (200°C) and line a baking sheet with parchment paper. Measure and mash roasted pumpkin flesh until smooth and set aside.
In a large mixing bowl, whisk together flour, brown sugar, baking powder, baking soda, and salt until well combined.
Add cold, cubed butter to the bowl. Use a pastry cutter or fork to cut the butter into the dry ingredients until the mixture resembles coarse crumbs with some pea-sized pieces.
1 cup roasted pumpkin flesh
Stir in the vanilla extract, pumpkin puree, and milk. Mix just until a shaggy dough forms. Do not overmix to keep scones tender.
1 cup roasted pumpkin flesh
Turn the dough onto a lightly floured surface. Gently knead a few times to bring it together, then pat into a 1-inch thick round. Use a knife or a biscuit cutter to cut into 8 equal wedges or rounds.
Place the cut scones onto the prepared baking sheet. Brush the tops lightly with extra milk for a golden finish. Bake for 15 minutes or until the tops are golden brown and crumbly.
1 cup roasted pumpkin flesh