Basic Green Sauce

   1      cup           Onions; Chopped — 2 Med.
     1/2  cup           Vegetable Oil
  10      ounces        Fresh Spinach — Chopped
     1/2  pound         Tomatillos — Coarsely Chopped
   4      ounces        Green Chiles; Chopped — 1 cn
   2      each          Cloves Garlic — Crushed
   1      tablespoon    Oregano Leaves — Dried
   1      cup           Chicken Broth
   2      cups          Dairy Sour Cream

Cook and stir onions in oil in a 3-quart saucepan until tender. Stir in remaining ingredients except broth and sour cream. Cover and cook over medium heat for 5 minutes, stirring occasionally. Place mixture in food processor work bowl fitted with steel blade or in a blender container; cover and process until smooth, about 1 minute. Return mixture to saucepan; stir in broth.  Heat to boiling; reduce heat. Simmer uncovered for 10 minutes. Stir in sour cream.  Cover and refrigerate any remaining sauce. Makes about 4 cups of sauce.