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

In another bowl, whisk together the milk, egg, melted butter, and vanilla extract.

Pour the wet ingredients into the dry ingredients and gently stir until just combined.

Heat a non-stick skillet or griddle over medium heat.

Add a small amount of butter or oil to the skillet and let it melt.

Use a ladle to pour about 1/4 cup of batter for each pancake onto the skillet.

Cook the pancakes until bubbles appear on the surface and the edges look set, about 2-3 minutes.

Carefully flip each pancake and cook for another 1-2 minutes until golden brown.