Preheat oven to 425°. Meanwhile, in large bowl, whisk together flour, corn meal, baking powder and salt. Stir in cheese. In another smaller bowl, thoroughly whisk together milk, egg and melted butter. When oven is hot, put oil in 9-inch or 10-inch cast-iron skillet or glass pie plate; place in oven to preheat for 5 minutes. Remove skillet or pie plate from oven. Stir milk mixture into dry ingredients just until no traces of dry ingredients remain. Spread batter evenly in hot skillet or pie plate. Return to oven to bake for 20 to 25 minutes, or until corn bread is golden on top and skewer or knife inserted in center comes out clean.