In a mixing bowl, add the flour, salt, baking powder, and sugar. Whisk together. Using a pastry brush, lightly oil the top and bottom irons or lightly spray with cooking spray, then preheat your waffle iron.
In another mixing bowl, add the eggs and whisk. Add the milk, butter, and vanilla. and whisk together.
Pour the liquid into the flour mixture, and whisk until well blended.
Ladle batter in an even layer onto the hot bottom iron and close the top of the iron. Cook until the waffles are golden brown and crisp, 3 to 6 minutes.
Serve with butter and syrup, enjoy.