Preheat oven to 400°F degrees.
Line baking sheet with parchment paper.
Mix flour, sugar, baking powder, salt together.
Add cinnamon, nutmeg, and ginger to mixture.
Cut cold butter into small pieces.
Add butter to flour mixture completely.
Use pastry cutter until mixture resembles crumbs.
Whisk pumpkin, milk, and egg together.
Pour wet ingredients into dry mixture.
Stir until dough just comes together.
Turn dough onto floured surface gently.
Pat into 8-inch circle shape.
Cut into 8 triangular wedges.
Place on prepared baking sheet.
Bake for 15-18 minutes until golden.