1. Heat oven to 400 degrees. In large skillet over medium-high heat, brown ground beef; drain. Stir in salsa, kidney beans, tomatoes, corn, chili powder and cumin. Cook 3 to 4 minutes or until thoroughly heated, stirring occasionally.
2. Meanwhile, prepare cornbread as directed on package using milk and, if required, margarine and egg. Spoon cornbread batter around outside edge of ungreased 12x8-inch (2-quart) baking dish. Spoon hot beef mixture into center. (Casserole will be full.)
3. Bake at 200ºC or 18 minutes. Sprinkle with cheese; bake an additional 4 to 5 minutes or until cheese is melted and cornbread is deep golden brown. Sprinkle with green onions just before serving.
Nutrition Information Per Serving: 500 Calories, 19 g Fat, 1330 mg Sodium