Preheat the oven to 400°F (200°C).
In a large bowl, combine cornbread mix, eggs, and milk. Mix until just combined.
In a separate bowl, combine black beans, ground meat, corn, diced tomatoes, bell peppers, and onions.
Layer half of the cornbread mixture into a greased baking dish.
Spread the meat and vegetable mixture evenly over the cornbread layer.
Pour the remaining cornbread mixture over the top.
Sprinkle shredded cheese on top of the casserole.
Bake in the preheated oven for 30-35 minutes or until golden brown.
Allow to cool for 5-10 minutes before serving.
Garnish with fresh herbs if desired.