HEAT oven to 450°F. Cook sausage in a 10 1/2-inch cast iron skillet over medium heat until thoroughly cooked. Drain sausage; set aside sausage, discard drippings. Place skillet in oven to heat.
BEAT egg in medium bowl. Add corn meal mix, flour, milk and oil; stir until smooth. Stir in sausage. (Batter should be pourable. If batter is too thick, add additional milk.) Pour batter into hot skillet.