In a large bowl, sift together the flour, baking powder, salt, and sugar. Whisk to combine evenly.

Create a well in the center of the dry ingredients. Pour in the milk, egg, and melted butter. Whisk until just combined; do not overmix. A few lumps are perfectly fine and will result in fluffier hotcakes.

Heat a lightly oiled griddle or frying pan over medium-high heat. Pour or scoop the batter onto the griddle, using approximately ¼ cup for each hotcake. Brown on both sides and serve hot.