In a medium bowl, combine all the dry ingredients.
Whisk in all the wet ingredients until a batter forms.
Slowly stream in gently melted unsalted butter until combined and a batter forms.
Preheat the waffle iron, spray with cooking oil and add enough batter to fill up the iron ¾ of the way around.
Cook (flip when needed) until golden brown.
Top with a piece of butter and drizzle with maple syrup.
