This classic chili is made with beef, kidney beans, cannellini beans, black beans, a medley of spices, and it's made in the crockpot! Perfect comfort food.
Heat a large skillet over medium-high heat. Add the olive oil, onion, and garlic and sauté for 5 minutes, stirring frequently. Add the bell pepper and sauté for another 2-3 minutes. Add the beef, chili powder, cumin, onion powder, paprika, smoked paprika, and salt and sauté for 6-7 minutes or until beef is cooked through.
Add mixture to your slow cooker along with the tomato sauce, diced tomatoes, kidney beans, cannellini beans, and black beans. Stir to combine. Cover and cook on low for 7-8 hours, or on high for 4-5. You will know it's finished when the chili is very thick and concentrated. I've even cooked mine for longer on low. Season to taste with additional salt if desired.
Serve with sour cream, cheese, chopped cilantro, scallions, and crushed tortilla chips!