Bestest as Light and Fluffy as a Butter Cake Can Be!

"If you love  butter cake but wish the texture could be light and fluffy as a sponge cake, please try this delightful butter cake adapted from a recipe posted in wendyinkk.blogspot.com called "Mrs. NgSK Vanilla ButterCake."  Wendy, who is from Malaysia, says that she  used to eat a really good buttercake that this lady called Mrs. NgSK from church used to bring, and one day she asked for the recipe which the lady surprisingly shared with her. Many other food bloggers have adopted her cake, and I think most if not all may be from Asia (which i think is known for their light cakes).  So now I am sharing it with you my fellow Food52ers; but I have modified the recipe by replacing the self rising flour it asks for with all purpose flour and baking powder, and converting from grams to cup. I sometimes do this recipe using my scale; and on other occasions I use the cup measurements. Both deliver an excellent cake. I don't think you will find a better butter cake than this one because it is buttery in your mouth yet light and fluffy. Please do use the exact size of pan that is required, an 8 inch square cake pan; and, ideally, of a light not dark color...."