Step 1

Whisk together the flour, pumpkin spice, baking soda, baking powder, and salt in a medium bowl. In a separate bowl, whisk together the butter, egg white, vanilla, and maple syrup. Stir in the pumpkin, stirring until no large lumps remain. Stir in the vinegar. Stir in the milk. Alternate between adding the flour mixture and the water, beginning and ending with the flour, stirring just until incorporated. (For best results, add the flour mixture in 3 equal parts.)

Step 2

Lightly coat a large nonstick pan or griddle with nonstick cooking spray, and briefly preheat over low heat.

Step 3

Using a scant 2 tablespoons of batter for each pancake, dollop the batter onto the hot pan, and spread into a circular shape using a spatula or back of a spoon (if desired). Let the pancakes cook for 2-3 minutes, or until a slight skin starts to form around the edges. Slide a spatula underneath, and flip. Continue to cook for another 1-2 minutes or until cooked through. Re-coat the pan with nonstick cooking spray, and repeat with the remaining batter.