Gather all ingredients at room temperature.
In a large bowl, whisk together the flour, baking powder, sugar, and salt.
In another bowl, mix the milk, eggs, melted butter, and vanilla until smooth.
Combine wet and dry mixtures; stir gently until just combined (lumps are okay).
Preheat your waffle iron according to instructions.
Pour batter onto the hot iron (about ½ cup), close it, and cook until golden brown (4-5 minutes).
Serve with syrup or fresh fruit.
