Preheat oven to 400 degrees. Spray a 9x13 baking dish with nonstick spray.
Brown the ground beef over medium heat, crumbling as it cooks. Drain fat and return beef to the pan.
Add the taco seasoning and Ro*Tel (do not drain) to the pan and stir well to combine over medium heat. Cook for 1 minute.
Transfer the beef to the prepared baking dish and set aside.
Mix together the corn muffin mix, milk, egg, corn, and chiles until just combined.
Spread corn muffin mixture over the meat.
Bake for 10 minutes or until cornbread is nearly set.
Sprinkle the top with cheese and return to the foven to finish baking, about 5 minutes.
Serve topped with sliced jalapeno and olives or any other taco toppings you enjoy.