Fluffy Belgian Waffles

Spray a Belgian waffle iron with cooking spray and preheat according to manufacturer's instructions.

Beat eggs with a whisk until fluffy. Beating slightly after each ingredient, first add milk, then oil, sugar, salt, baking powder, all-purpose flour, and finally whole wheat flour; do not overbeat.

Pour 3/4 cup batter into the center of the hot waffle iron, spreading with a metal knife if necessary. Close the iron and bake until it stops steaming, 2 to 5 minutes, depending on your iron. Carefully remove cooked waffle with a fork and repeat with remaining batter.