1.In A Greased 5-Qt. Slow Cooker; Layer A Third Of The Potatoes, Sausage, Onions And Cheese Soup. Repeat Layers Twice. 2.Pour Cream Of Celery Soup Over The Top. Cover And Cook On Low For 5-1/2 Hours Or Until The Potatoes Are Tender. Add The Peas And Cook 30 Minutes Longer.