01 - In a large pot or Dutch oven over medium-high heat, cook the ground beef until browned, breaking it up with a spoon, about 5 minutes. Drain excess fat if needed.
02 - Add the onion, bell pepper, and garlic. Sauté for 4-5 minutes until the vegetables are softened.
03 - Stir in the chili powder, cumin, smoked paprika, cayenne pepper, oregano, salt, and black pepper. Cook for 1 minute until fragrant.
04 - Add the tomato paste and stir to combine thoroughly.
05 - Pour in the crushed tomatoes and beef broth. Bring to a simmer.
06 - Add the kidney beans and stir well. Reduce heat to low, cover, and simmer for 45 minutes, stirring occasionally.
07 - Taste and adjust seasoning if needed. Ladle chili into bowls. Top each serving with shredded cheddar cheese, green onions, and a dollop of sour cream if desired.