In a large mixing bowl, whisk together all-purpose flour, baking powder, sugar, and salt until combined. Set aside.

In a separate bowl, beat together milk, egg, melted unsalted butter, and vanilla extract until smooth.

Gently pour the wet mixture into the bowl with the dry ingredients and stir until just combined.

Preheat a lightly greased skillet over medium heat until a drop of water sizzles on contact.

Scoop about 1/4 cup of batter onto the skillet for each pancake and cook for 2-3 minutes, until bubbles form.

Flip each pancake carefully and cook for another 1-2 minutes, or until golden brown.

Serve immediately with your favorite toppings.