1teaspoonsalt (reduce to ½ if using salted butter)
1stickunsalted butter, cold plus more for buttering your pan.(114 grams)
1largeegg(60 grams)
1cupmilk (not buttermilk)(70 grams)
Instructions
Preheat oven to 450 degrees F. Have ready a greased 10-inch cast iron skillet or a 9-inch square pan. If making a half batch, you can use a 6-inch skillet.
Whisk together both flours, baking powder, sugar, salt and cream of tartar.
Add the butter by cutting it in with a pastry cutter or cutting in to small chunks and using your fingers to work it into a coarse meal.
In a separate bowl, whisk together the egg and milk. Add gradually (though you'll probably use it all) stirring until you have a soft dough.
Turn the dough onto a floured work surface. Pat it down and fold it over on itself a few times, then shape into a 1 inch thick slab. Cut into 2 inch rounds (or any size in between) and arrange rounds in your prepared pan.
Bake for about 20 minutes or until tops are brown. If you want the tops to be more brown, you can brush them with cream or melted butter.