Creamed Zucchini / Potato Soup

from “Meatless Meals for Working People” by Debra Wasserman & Charles Stahler)

1 small onion, chopped
3 Tablespoons oil
3 or 4 medium zucchini, chopped
2 large white potatoes, scrubbed and cut into small cubes
6 cups water
1/2 cups rolled oats
1/2 teaspoon salt
2 Tablespoons fresh parsley, finely chopped

Sauté onion in oil in a large pot for 2 minutes. Add chopped zucchini and cubed potatoes. Sauté for 5 minutes longer. Add water, oats, and seasoning. Simmer for 15 minutes. Puree mixture in a blender, reheat, and serve warm.