Heat waffle Iron. Separate eggs, putting egg whites in a small mixing bowl and egg yolks in a large mixing bowl.
Beat egg whites in a small mixing bowl until soft peaks appear. Set aside.
Beat egg yolks, milk and vanilla until smooth.
Beat in dry ingredients until well blended.
Gently fold in egg whites with rubber spatula or wooden spoon.
Spray waffle iron with cooking spray . Pour batter using a measuring cup onto center of hot greased waffle iron. Bake until steaming stops, about 5 min. Remove waffle carefully. Repeat with the rest of the batter making sure to spray waffle iron with cooking spray before adding batter for each waffle.