Preheat your waffle iron and spray it with non-stick cooking spray.
In a large bowl, whisk together the dry ingredients: flour, baking powder, sugar, salt, and cinnamon.
2 1/4 cups all-purpose flour, 1 tablespoon baking powder, 3 tablespoons sugar, 1/2 teaspoon salt, 1 teaspoon cinnamon
In a separate medium bowl, beat the egg whites until stiff peaks form.
2 large eggs
In another medium bowl, mix together the egg yolks, vegetable oil, milk, and vanilla extract.
1/2 cup vegetable oil, 2 cups milk, 1 teaspoon vanilla extract
Add the egg yolk mixture to the dry ingredients and mix well.
Gently fold in the beaten egg whites.
Pour the batter onto the preheated waffle iron and cook according to the manufacturer's directions.
Serve immediately with your favorite toppings, such as fresh berries, syrup, or whipped cream.