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

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

Pour the wet ingredients into the dry ingredients and stir until just combined. Do not overmix; a few lumps are okay.

Heat a griddle or frying pan over medium heat and lightly grease it with butter or oil.

Pour about 1/4 cup of batter onto the griddle for each pancake.

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

Flip the pancakes and cook for an additional 1-2 minutes until golden brown.

Serve warm with your favorite toppings such as syrup, fresh fruit, or whipped cream.