Turn waffle maker on and let it get hot while you prep the waffle mixture.
Add oats, baking powder and pumpkin pie spice into blender and blend until everything is completely smooth.
Add the rest of the ingredients into blender and blend for another 1-2 minutes until everything is well combined.
Spray nonstick oil to waffle maker then pour waffle batter (about ⅓ cup depending on the size of your waffle maker) and close until done to your liking. Leave in longer if you like crispier.