Preheat waffle iron and spray with non-stick cooking spray.
In a large bowl whisk together all of the dry ingredients.
In a medium mixing bowl beat the egg whites with a hand mixer until stiff peaks form.
Set aside.
In a separate bowl mix together the egg yolks, milk, oil and vanilla.
Add the egg yolk mixture to the dry ingredients and mix well.
Fold in the egg whites.
With a ladle, pour the batter onto the hot waffle iron and cook according to your waffle iron instructions.
Serve immediately.