Gather flour, sugar, baking powder, salt, milk, eggs, melted butter, and vanilla extract
Preheat a waffle iron
Mix flour, sugar, baking powder, and salt in a bowl
Whisk milk, eggs, melted butter, and vanilla extract in another bowl
Pour the wet ingredients into the dry ingredients
Stir until just combined
Lightly grease the waffle iron if needed
Pour batter into the waffle iron
Close the lid and cook until golden brown and crisp
Remove the waffle carefully
Repeat with the remaining batter
Serve with syrup, fruit, butter, or toppings of choice