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

In another bowl, mix 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.

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

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

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

Repeat with the remaining batter, greasing the pan as needed.

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