In a large mixing bowl, combine the flour, sugar, baking powder, and salt. Whisk well.

In a separate bowl, whisk together the milk, egg, melted butter, and vanilla extract until frothy.

Create a well in the dry ingredients and pour in the wet ingredients. Gently fold until just combined.

Preheat a non-stick skillet over medium heat and grease with butter or oil.

Pour about 1/4 cup of batter for each pancake onto the skillet. Cook until bubbles form on the surface.

Flip the pancakes carefully and cook until golden brown on the other side.

Serve warm with your favorite toppings like maple syrup or fresh fruit.