Preheat oven to 350⁰F. Line two sheet pans with parchment paper. In a medium bowl, whisk together flours, baking soda, baking powder, cinnamon, and salt, reserve. In a cup, stir the non-dairy milk with the flax seeds and let stand to thicken for about five minutes. In a medium bowl, stir the vegetable oil, maple syrup and pumpkin puree to mix well. Stir in the flax mixture. Stir the pumpkin mixture into the flour mixture until combined.