01 - In a large pot or Dutch oven over medium heat, add the ground beef. Cook, breaking it up with a spoon, until browned and no longer pink, about 5–7 minutes. Drain excess fat if needed.
02 - Add the chopped onion, bell pepper, and jalapeño (if using). Sauté for 5 minutes until vegetables are softened.
03 - Stir in the garlic and cook for 1 minute until fragrant.
04 - Add chili powder, cumin, smoked paprika, oregano, black pepper, salt, and cayenne (if using). Stir well to coat the meat and vegetables with the spices.
05 - Mix in tomato paste, diced tomatoes with their juice, kidney beans, and beef broth. Stir to combine thoroughly.
06 - Bring the chili to a simmer. Reduce heat to low, cover, and cook for 45 minutes, stirring occasionally to prevent sticking.
07 - Adjust seasoning to taste. Serve hot, garnished with cilantro, sour cream, cheese, and green onions if desired.