In a large bowl, sift together the flour, baking powder, sugar, and salt.
Make a well in the center and pour in the milk, egg, and melted butter; mix until smooth.
Heat a lightly oiled griddle or frying pan over medium-high heat. Pour or scoop the batter onto the griddle, using approximately 1/4 cup for each pancake. Brown on both sides and serve hot.
Notes
For extra fluffiness, let the batter sit for 5-10 minutes before cooking.