Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   3      4 oz cans     sliced mushrooms -- drained
   1      tablespoon    margarine
   3      cups          chicken broth
   2      tablespoons   onion -- chopped
                        salt and pepper -- to taste
   2      tablespoons   all-purpose flour
   1      cup           sour cream
   1      cup           half and half cream or milk

Preparation:

In skillet, saute sliced mushrooms in butter; place in crock pot. Add chicken broth, onion, salt, and pepper; stir well. Cover and cook on low setting for 6 to 10 hours (on high setting for 2 1/2 to 3 hours). About 30 minutes before serving, turn to high setting. Mix flour and sour cream; add to crock pot with half and half cream. Cook until slightly thickened.