Preheat oven to 424 F
Grease a round 9 inch cake pan and set aside
In a large mixing bowl, combine dry ingredients
Create a well in the center of the flour mixture and pour buttermilk into center
Using a rubber spatula, gently fold the flour mixture into the wet center in a circular motion, making sure to stir until ingredients are just combined. Be careful not to overwork the dough.
On a well floured surface, turn out dough and gently work it into a even round shape about 8 inches in diameter. I like to pat a little extra flour on the top of mine, but that's optional.
Place dough in greased pan and make a cross using a knife in the top of the dough. Place another 9 inch round cake pan on top
Bake for 25 minutes, then remove top pan and continue to bake for an additional 10 minutes, or until a nice golden crust forms