This easy recipe for slow cooker chili is perfect for game day or a cozy night in. Simply brown ground beef and onions in a skillet, then add them to your crock pot along with canned tomatoes, kidney beans, chili powder, and other seasonings. Let it cook on low for 6-8 hours and you'll have a delicious and hearty chili that's perfect for topping with shredded cheese and sour cream.