01 - Heat a skillet over medium heat. Add ground beef and cook until browned, breaking it apart as it cooks. Drain excess fat and transfer to the crockpot.
02 - In the same skillet, add diced onion, minced garlic, and bell pepper. Sauté for 2-3 minutes until softened. Transfer the mixture to the crockpot with the beef.
03 - Add the corn, diced tomatoes with juices, green chilies, black beans, and kidney beans to the crockpot. Pour in the beef broth.
04 - Sprinkle the taco seasoning, ground cumin, black pepper, and salt over all ingredients. Stir thoroughly to ensure even distribution of seasonings.
05 - Cover and cook on Low setting for 6-7 hours or on High setting for 3-4 hours until flavors have melded together.
06 - Taste the soup and adjust salt, pepper, or cumin as needed to achieve desired flavor balance.
07 - Ladle hot soup into bowls and top with shredded cheese, sour cream, cilantro, jalapeños, or tortilla chips as desired.