In a large bowl, sift together the all-purpose flour, baking powder, sugar, and salt. This step ensures a smooth and light pancake batter.
Create a well in the center of the dry ingredients and pour in the milk, melted butter, and crack in the egg. Gently mix everything together until a smooth batter forms. Be careful not to overmix; a few lumps are perfectly fine.
Heat a lightly oiled griddle or pan over medium-high heat. For each pancake, pour or scoop approximately 1/4 cup of batter onto the griddle. Allow the pancakes to cook until bubbles start forming on the surface and the edges appear dry, which usually takes about 2 to 3 minutes.
Once the bubbles have formed and the edges are set, carefully flip the pancakes using a spatula. Cook for an additional few minutes until the other side turns golden brown.
Repeat the process with the remaining batter, ensuring that each pancake is cooked to perfection.