Preheat waffle iron.
Add egg whites to the bowl of stand mixer and beat until soft peaks form. Set aside.
In a separate large bowl, combine egg yolks, pumpkin puree, coconut oil, apple cider vinegar, coconut milk, vanilla, and maple syrup.
In a small bowl, combine flours, baking soda, salt, and spices.
Add dry to wet ingredients, 1/2 cup at a time, mixing until fully combined.
Allow batter to stand for 5 minutes.
Gently fold in the egg whites with a rubber scraper. Don't over-mix here otherwise you'll knock the air out of the batter.
Spoon batter into hot waffle iron.
Serve with maple syrup, butter or some amazing vanilla bean ghee like this one from Fourth & Heart!