Set aside the flour, salt, baking powder, and sugar in a large mixing basin. Preheat the waffle maker to the appropriate temperature.
Step 2 Beat the eggs in a separate basin. Mix in the milk, butter, and vanilla extract. Pour the milk mixture into the flour mixture and stir until combined.
Step 3 Pour the batter into a hot waffle iron. Cook the waffles until they are golden brown and crunchy. Serve right away.