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; some lumps are okay.

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

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

Cook until bubbles form on the surface, about 2-3 minutes, then flip and cook for another 1-2 minutes until golden brown.

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