01 - Heat a skillet over medium heat. Add the ground beef and cook, breaking it apart with a spoon, until browned and no longer pink. Drain any excess fat.
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 - To the crockpot, add corn, diced tomatoes with their juices, green chilies, 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 ingredients and distribute seasonings.
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 or additional seasonings as needed. Serve hot topped with shredded cheese, sour cream, cilantro, jalapeños, or tortilla chips if desired.