Potato Soup For Crockpot Main Dish       (out of 0 ratings) Submitted by Admin Ingredients 4 each potatoes, cubed 1 each onion, chopped 1 tablespoon butter OR margarine 1 each chicken boullion cubes 1 tablespoon parsley 3 cup water 1 cup milk 1/4 cup flour, mixed with water Directions: Place ingredients 1 through 6 in the crockpot and cook all day on low to medium. A 1/2 hour to one hour before serving; add milk and flour mixture. After the soup starts to thicken, it is ready to serve. NOTE: Add 1/4 pound of velveeta cheese for cheese potato soup. A can of evaporated milk may be substituted for the regular milk.