Preheat your oven to 350°F (175°C).

In a large skillet over medium heat, brown the ground beef and chopped onion for 5-7 minutes.

Stir in black beans, diced tomatoes, chili powder, cumin, garlic powder, salt, and black pepper, simmer for 5 minutes.

In a mixing bowl, combine cornmeal, milk, and egg, whisk until smooth.

Grease a 9x13-inch baking dish, layer half cornmeal mixture, beef mixture, remaining cornmeal mixture on top.

Top with shredded cheddar cheese and black olives, bake for 30-35 minutes until golden brown.

Allow to cool for 10 minutes before slicing, garnish with cilantro.