01 - Heat a skillet over medium heat. Add ground beef and 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 the 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 over all ingredients. Stir thoroughly to distribute seasonings evenly.
05 - Cover 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 salt, pepper, or cumin as desired before serving.
07 - Ladle hot soup into bowls and top with shredded cheese, sour cream, cilantro, jalapeños, or crushed tortilla chips as desired.