Preheat oven to 375°F with cast iron skillet inside.
Meanwhile, mix dry ingredients in a medium bowl. Add remaining ingredients, except cheese.
Remove skillet from oven and rub cooking oil on bottom and sides. Pour half of batter mixture into hot greased iron skillet. Top with 1/2 of cheese. Pour remaining batter over this and top with remaining cheese.
Bake at 375°F for 45 minutes. Turn off oven and leave in for 15 additional minutes.