Sift the flour, baking powder, sugar, and salt into a medium-sized bowl
Whisk in the milk, melted butter, beaten egg, and vanilla extract to the sifted flour mixture until combined and smooth. Let it rest for 5 minutes.
While the batter is resting, heat a griddle or skillet over medium heat. When hot, spray with cooking spray and add about ¼ cup of batter per pancake. Cook on one side until bubbles form.
Flip them over and cook for about a minute on the other side. Serve them immediately
