Brown the ground beef in a skillet over medium heat for 8 to 10 minutes, then drain the grease.
Transfer the cooked beef to a slow cooker and mix in the onion, celery, bell pepper, garlic, tomato puree, kidney beans, cannellini beans, chili powder, salt, basil, oregano, parsley, black pepper, and hot pepper sauce.
Cover and let it simmer on Low for 8 hours.
Serve hot and enjoy!
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