Whisk the flour, sugar, baking powder, and salt in a large bowl.

In a medium bowl whisk together the milk, egg, melted butter, and vanilla together until well combined.

Pour the milk mixture into the flour and fold together just until combined. It's okay if there are a few small lumps in the batter.

Heat a large skillet or griddle over medium-high heat. Rub or brush with butter to lightly grease the pan. Add ¼ cup of batter for each pancake.

Cook until golden on the bottom and bubbles start to appear on top, then flip and cook an additional minute or until golden brown. Add more butter with each new batch. Serve hot.