Preheat oven to 350 F. Lightly butter mini loaf pans or whatever choice of pan is preferred. In a food processor, pulse oatmeal for a few seconds then add flour, cornmeal, salt, baking powder, baking soda & sugar. Pulse for a few more seconds to evenly mix. Add cold butter & pulse just slightly to cut in; do not over mix. Place in a bowl, add buttermilk & combine ONLY until just mixed.