In a medium bowl, sift together the flour, baking powder, salt, and sugar.
Create a well in the center of the dry ingredients.
Pour the milk, lightly beaten egg, and melted butter into the well.
Whisk the ingredients together until the batter is smooth and well combined.
Heat a lightly oiled griddle or frying pan over medium-high heat.
Scoop approximately 1/4 cup of batter onto the pan for each pancake.
Cook until bubbles form on the surface, then flip and brown the other side until golden.
Serve immediately while hot with your favorite syrup or toppings.