Carefully and tightly roll into a log, then use floss or a serrated knife to cut into equally thin slices.
Chill for 30 minutes before rolling out. Roll out into a rectangle on floured surface, spread with butter, pumpkin butter and top with brown sugar, cinnamon and pumpkin pie spice.
Add dry ingredients to a sifter. Alternate adding milk and dry ingredients to the butter mixture while mixing. Then add vanilla and stir.
Cream sugars and butter with mixer; add egg and beat until combined.