In a large bowl, combine the flour, sugar, salt and baking powder. In a separate bowl or jug, combine the milk, vanilla, egg yolks and butter.

Place the egg whites in a clean bowl and whisk until they are frothy and begin to hold their shape.

Make a well in the middle of the dry ingredients and pour in the wet ingredients. Mix until combine.

Gently fold the whipped egg whites into the batter.

Place a medium frying pan over low heat and spray with non-stick spray.

Add pancake batter to the pan in ¼ cup measurements. Wait until there are bubble throughout the top of the pancake before flipping.

Serve warm with maple syrup.