Mexican Cornbread Casserole

Name: Mexican Cornbread Casserole
Prep time: 15 min
Cook time: 35 min
Total time: 50 min
Cuisine: Mexican
Ingredients: 1 pound ground beef (- I like to get sirloin ground beef); 1 medium sweet onion (chopped like Vidalia ); 3/4 cup chunky salsa; 1 1 oz. taco seasoning mix; 3/4 cup water; 1 15 oz. sweet corn ( drained); 1 2 oz. black olives (sliced and drained ); 1 cup yellow corn meal; 1 cup all-purpose flour; 1/4 cup sugar; 3 tsp. baking powder; 1 tsp. salt; 1/4 cup oil (such as corn or canola); 1 cup milk (2% or whole ); 1 large egg; 1 cup Mexican Style shredded cheese (shredded); 1 4 oz. diced green chiles (drained)