In a large bowl, whisk together flour, baking powder, sugar, and salt.

In another bowl, mix milk, egg, and melted butter until fully combined.

Pour the wet ingredients into the dry mixture and stir gently until just combined; lumps are okay.

Preheat a non-stick skillet over medium heat and lightly grease it.

Pour about 1/2 cup of batter for each pancake; cook until bubbles form on top (about 2 minutes), then flip and cook until golden brown (another minute).

Serve warm with your choice of toppings.