In a large bowl, whisk together flour, baking powder, sugar, salt, and cinnamon.
3 In a medium bowl, beat the egg whites with a hand mixer until stiff peaks form. Set aside.
4 In a separate medium bowl, mix together the egg yolks, vegetable oil, milk, and vanilla extract.
5 Add the egg yolk mixture to the dry ingredients and mix well.
6 Fold in the egg whites.
7 Pour batter onto your hot waffle iron and cook according to manufacturer's directions.
8 Serve immediately with butter, syrup, powdered sugar, or any other favorite toppings.