In a 4-6 quart slow cooker, spray it with non-stick spray, then place all ingredients in the slow cooker, up until the 4 cups of water. At this point, fill the slow cooker until all the ingredients are nicely covered with water, generally this is about 4 cups.
Cover and cook on low for 8 hours, set to warm until ready to serve.
Add salt/pepper to taste or additional parsley when serving.