In a large bowl, combine flour, brown sugar, white sugar, baking powder, cinnamon and salt. Whisk in milk, vegetable oil, vanilla extract and beaten egg yolks until smooth.
In a bowl, beat egg whites until soft peaks form.
Fold the egg whites and chocolate chips into the batter.
Preheat waffle iron. Coat with non-stick spray.
Pour batter onto the hot iron. Cook until golden brown.
Recipe by Sugar, Spice and Family Life at https://sugarspiceandfamilylife.com/2019/03/chocolate-chip-waffles-recipe.html