Step 1: Brown the Beef (Optional but Recommended) : In a large skillet over medium-high heat, cook the ground beef until browned and no longer pink (about 6–8 minutes). Drain excess fat. Transfer the cooked beef to your slow cooker.
Step 2: Add Aromatics and Vegetables : In the same pan, sauté onion, bell pepper, and garlic for 2–3 minutes to soften slightly and release flavor. Transfer them to the slow cooker as well.
Step 3: Add Remaining Ingredients : Add diced tomatoes, tomato sauce, tomato paste, kidney beans, beef broth, and all spices (chili powder, cumin, paprika, oregano, cayenne, salt, and pepper). Stir well to combine.
Step 4: Slow Cook to Perfection : Cover and cook on LOW for 7–8 hours or HIGH for 4 hours. Stir occasionally if possible. The chili is ready when thickened and the flavors are well blended.
Step 5: Adjust and Serve : Taste and adjust seasoning — add more salt, pepper, or chili powder as needed. Serve hot with your favorite toppings.