Heat waffle iron while making batter. Spray with cooking spray if needed.
In a large bowl, sift together flour, baking powder, baking soda, salt, cinnamon, ginger, nutmeg and ground clove. Whisk thoroughly to completely incorporate.
Whisk egg yolks in a medium bowl then add pumpkin, brown sugar and melted butter. Mix well then pour into bowl with dry ingredients and fold just until combined. Do not over mix. Beat egg whites to soft peaks then fold into mixture keeping as many air bubbles as possible.
Spray waffle iron lightly with non-stick spray then add batter to hot waffle iron. Cook until golden brown and crispy. Serve hot from the waffle iron with any of your favorite accompaniments.
Make this a true pumpkin pie by topping your delicious waffles with creamy whipped cream!