01 - Heat a skillet over medium heat and add ground beef. Cook, breaking apart with a wooden spoon, until no longer pink. Drain excess fat and set aside.
02 - Add diced onion, minced garlic, and bell pepper to the skillet with the beef. Sauté for 2-3 minutes until vegetables are softened. Transfer the mixture to the crockpot.
03 - Pour corn, diced tomatoes with juices, green chilies, black beans, and kidney beans into the crockpot with the beef mixture.
04 - Pour beef broth over ingredients. Sprinkle taco seasoning, cumin, black pepper, and salt evenly across the top. Stir thoroughly to combine all ingredients.
05 - Cover and cook on Low setting for 6-7 hours or on High setting for 3-4 hours until flavors are melded and vegetables are tender.
06 - Taste the soup and add additional salt, pepper, or cumin if needed to achieve desired flavor profile.
07 - Ladle hot soup into bowls and top with shredded cheese, sour cream, cilantro, jalapeños, or tortilla chips as desired.