01 - Heat a skillet over medium heat and add ground beef. Cook, breaking 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. Sauté for 2-3 minutes until vegetables begin to soften. Transfer the beef and vegetable mixture to the crockpot.
03 - Pour corn, diced tomatoes with their 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 flavors.
05 - Cover crockpot with lid. Cook on Low setting for 6-7 hours or on High setting for 3-4 hours until flavors meld and vegetables are tender.
06 - Remove lid and taste soup. Add additional salt or spices if desired. Ladle hot soup into bowls and serve with optional toppings.