Drain and rinse thoroughly. Place the beans, water, and bay leaf in a 4-quart or larger slow-cooker. Cook on low for a total of 11 hours. At 9 hours, 30 minutes of cooking, stir in the onion.
That's the magic of a quality slow ... Cooker is double the price of the other cookers we tested, but it performed the best in the slow cooking tests. The chili was perfect, with the vegetables ...