11. Sift together flour, baking powder, sugar, and salt in a large mixing bowl.
22. Whisk milk, egg, melted butter, and vanilla in a separate bowl until completely incorporated.
33. Create a well in the center of dry ingredients. Pour wet mixture into dry ingredients. Stir gently until just combined - some small lumps are perfect.
44. Heat flat griddle or non-stick pan to 375°F. Lightly brush surface with vegetable oil.
55. Using a ¼ cup measure, pour batter onto hot griddle. Cook until tiny bubbles form across surface, about 2-3 minutes.
66. Flip pancake and cook reverse side until golden brown, approximately 1-2 minutes.
77. Transfer to warm plate. Repeat with remaining batter.