In one bowl, combine the flour, sugar, and baking powder.
In another bowl, lightly beat the egg yolks. Add milk, melted butter, and vanilla extract, then mix well.
Add the wet ingredients to the dry ingredients and stir gently until just combined.
Beat the egg whites until stiff peaks form, then carefully fold them into the batter.
Pour batter into a preheated waffle maker and cook according to the manufacturer’s instructions until golden brown.
Serve warm with fresh fruit and confectioners' sugar or syrup.
