Aaron Heise
Super yummy. I've reduced the amount of salt and baking powder gradually, as about the third time I made these it had a salty overtone. 
I've thought also about (but haven't yet tried) making these with the "full" salt and baking powder amounts but with unsalted butter.
Perhaps it's a function of doubling the recipe and fully doubling the baking powder isn't necessary? That's something I don't know. 
BUT these are very tasty.