For a vegetarian version, swap ground beef for two extra cans of beans or crumbled tofu. To make in the slow cooker, brown beef and sauté veggies first, then transfer everything to the slow cooker and cook on LOW for 6–8 hours or HIGH for 3–4 hours. Chili keeps up to 5 days chilled, or 3 months frozen. For spicier chili, add diced jalapeños, chili flakes, or smoked paprika to taste.