Heat oven to 350°F. Grease 2-quart casserole. In large skillet, cook ground beef, onions, bell pepper and garlic over medium-high heat until beef is thoroughly cooked. Drain. Stir in kidney beans, tomato sauce and taco seasoning mix. Reduce heat; simmer 10 minutes.
Meanwhile, in medium bowl, combine flour, cornmeal, sugar, baking powder and salt; mix well. In small bowl, combine corn, milk and egg; beat well. Add to dry ingredients; stir just until moistened.
Spoon 1/2 the cornbread mixture into greased casserole; sprinkle with 1/2 the cheese. Spoon chili over cheese; sprinkle with remaining cheese. Spoon remaining cornbread mixture evenly over cheese, spreading gently to cover.
Bake at 350°F. for 30 to 40 minutes or until top is golden brown. Let stand 5 minutes before serving.