01 - Heat a skillet over medium heat. Add ground beef and cook until no longer pink, breaking it apart as it cooks. 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 - To the crockpot, add the drained corn, diced tomatoes with their juices, green chilies, rinsed black beans, and kidney beans.
04 - Pour in the beef broth. Sprinkle taco seasoning, cumin, black pepper, and salt evenly over the ingredients. Stir thoroughly to combine all elements and distribute seasonings.
05 - Cover the crockpot and cook on Low setting for 6-7 hours or on High setting for 3-4 hours until flavors have melded and vegetables are tender.
06 - Taste the soup and adjust seasoning with additional salt or pepper if desired. Serve hot topped with shredded cheese, sour cream, cilantro, jalapeños, or crushed tortilla chips as preferred.