Preheat your waffle iron.

In a large mixing bowl, combine the flour, sugar, baking powder, and salt.

In a separate bowl, beat the egg yolks and stir in the milk, vegetable oil, and vanilla extract.

Add the wet ingredients to the dry ingredients and mix until just combined.

In another bowl, beat the egg whites until stiff peaks form and gently fold into the batter.

Ladle the batter onto the preheated waffle iron and cook until golden brown and crispy.

Serve hot with your choice of toppings such as butter, syrup, or fresh fruits.