Preheat the waffle iron
Mix flour, baking powder, sugar, and salt in a bowl
Whisk eggs, milk, and melted butter in another bowl
Combine the wet and dry ingredients until just mixed
Lightly grease the waffle iron if needed
Pour batter onto the hot waffle iron
Close the lid and cook until golden brown and crisp
Remove the waffle carefully
Repeat with the remaining batter
Serve immediately with your preferred toppings