01 - Heat a skillet over medium heat and add the ground beef. Cook, breaking it apart with a 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 and fragrant. Transfer the entire mixture to the crockpot.
03 - Pour the corn, diced tomatoes with their juices, green chilies, black beans, and kidney beans into the crockpot with the beef mixture.
04 - Pour in the beef broth. Sprinkle the taco seasoning, cumin, black pepper, and salt evenly over the ingredients. Stir thoroughly to combine all components and distribute the seasonings.
05 - Cover the crockpot and cook on Low setting for 6-7 hours or on High setting for 3-4 hours, until flavors are melded and soup is heated through.
06 - Taste the soup and adjust salt or spices as needed. Ladle hot soup into bowls and serve with your choice of shredded cheese, sour cream, cilantro, jalapeños, or tortilla chips.