― I made a huge batch of black beans and was wondering how I was going to use them. I used my slow cooker to cook the beans during the day, while I ran my errands. Taking dried beans, soaking them and then allowing them to cook in water for 6-8 hours on low is a great money saver! Canned beans can have a canny taste and cost a lot more. For 1 can of organic black beans (about 2 cups) it is about $1.30 ish and 1lb of dried organic black beans is about $1.50 ish (which produces about 5-6 cups of [...].