In a large bowl, whisk together the flour, baking powder, salt, and sugar.
In a separate bowl, whisk together the milk, egg, and melted butter.
Pour the wet ingredients into the dry ingredients and stir until just combined. A few lumps are okay; do not overmix.
Heat a lightly oiled griddle or frying pan over medium-high heat. Pour or scoop the batter onto the griddle, using approximately 0.25 cup for each pancake.
Cook until bubbles form on the surface of the pancake, then flip and cook until golden brown on the other side.
Serve immediately with your favorite toppings like syrup, fruit, or whipped cream.
Notes
For extra fluffy pancakes, let the batter rest for 5-10 minutes before cooking.