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 with the beef. Sauté for 2-3 minutes until vegetables begin to soften. Transfer entire mixture to the crockpot.
03 - Add corn, diced tomatoes with juices, green chilies, black beans, and kidney beans to the crockpot.
04 - Pour in beef broth. Sprinkle taco seasoning, cumin, black pepper, and salt evenly over ingredients. 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 have melded and vegetables are tender.
06 - Remove lid and taste soup. Adjust salt, pepper, or spices if desired. Ladle hot soup into bowls and serve with your choice of toppings.