In a mixing bowl, combine the vegan butter with peanut butter. Use a mixer to whip together until light and fluffy.
In a separate, small bowl, combine the starchy flax egg ingredients. Add to the peanut butter batter and mix to combine. Add the vanilla and sugars. Beat until fluffy.
Create a well in the middle of the batter and add the flour, baking soda, baking powder, salt, and pumpkin pie spice. Stir to combine and then fold into the rest of the batter.
Drop by rounded tablespoonfuls onto an ungreased cookie sheet, at least an inch apart. Bake for 8 to 10 minutes, until the cookies are done and lightly golden. Remove from the oven and allow to cool slightly before transferring to a wire rack to cool. Store in an airtight container.