Heat oven to 450. Coat 8-9 inch ovenproof skillet (cast iron skillet works best) with cooking spray. Place skillet in oven 7-8 minutes until hot.
Beat egg in medium bowl. Stir in milk, oil, and corn meal mix until smooth. Batter should be creamy and pourable. If to thick, add 1 to 2 tablespoons more milk. sprinkle a little cornmeal over bottom and sides of hot skillet for crisp. Pour batter into pan.