Preheat oven to 400 degrees F. In a mixing bowl combine flour, brown sugar, baking powder, pumpkin pie spice, baking soda, and salt. With a pastry blender cut in the 1/2 cup chilled margarine or butter until mixture resembles coarse crumbs. Make a well in the center of dry mixture; set aside.
In another bowl combine egg, pumpkin, and milk. Add egg mixture all at once to dry mixture. Using a fork, stir just until moistened.
Turn out dough onto a lightly floured surface. Quickly knead dough by folding and pressing gently for 10 to 12 strokes or until nearly smooth. Pat dough into an 8-inch circle. Cut into 12 wedges.
Place wedges 1 inch apart on an ungreased or parchment-lined baking sheet. If desired, brush tops with additional milk. Bake for 12 to 15 minutes or until golden. Remove scones from baking sheet and cool on a wire rack for 5 minutes. Serve warm with Berry Butter. Makes 12 scones.
For Berry Butter:
In a small bowl combine dried cranberries or dried blueberries and boiling water. Let stand 10 minutes. Drain well and finely chop berries. Stir together the 1/2 cup margarine or butter, powdered sugar, and the cranberries or blueberries. Cover and let chill at least 1 hour before serving to allow flavors to blend. Makes 3/4 cup.