Broccoli Soup (Arla Parsons)

1 can chicken broth
1 pkg frozen broccoli
1 onion, chopped
1 cube butter
1/2 cup flour
1 qt milk or half and half
salt and pepper to taste

Boil onions and broccoli in chicken broth until tender.  Add flour to milk; mix well.  Add butter and milk to broccoli mixture.  Stir until thickened. 
Sauce base can be used for any cream soup such as potato or clam chowder.