Combine the browned ground beef, shredded Velveeta cheese, green pepper, onion, jalapeno peppers, stewed tomatoes, black beans, chili powder and ground cumin in the bottom of a slow cooker. Mix with a large spoon until evenly combined.
In a bowl mix the cornbread mix with the egg and milk until combined to make a thick batter.
Using a tablespoon drop the cornbread batter over the top of the casserole ingredients in the crock pot.
Drape a double layer of paper towels over the top and place the lid on trapping the paper towels along the edges. Do not let them touch the top of the cornbread. This will prevent the moisture that forms on the inside of the lid from dripping down onto the cornbread as it cooks.
Slow cook on high 4 hours or until piping hot and the center of the cornbread is cooked through.
15 minutes before serving sprinkle the top of the cornbread with the shredded pepper jack cheese. Discard the damp paper towels and recover. Serve once the cheese has melted.
Recipe Expert Tips
Preventing soggy crock pot casserole tops: Draping a layer of paper towels over the top of the slow cooker is a great way to prevent the tops of crock pot casseroles and crock pot desserts from getting wet and soggy from the condensation that forms on the inside of the lid.