Stephanie's Cream Broccoli Au Gratin Soup

                                                                  

Stephanie's Cream Broccoli Au Gratin Soup

2 Tbls. Butter
1/2 cup onion, chopped
1 3/4 cup water
1 pkg. Uncle Ben's Country Inn Brand Broccoli Rice Au Gratin
1/4 cup flour
1/4 tsp. dry mustard
1 3/4 cup chicken broth
2 cups milk
1/2 cup shredded Cheddar cheese

Cook onion in butter in 6 quart or larger pan until tender. Add water and contents of rice pkg. Bring to a boil, then reduce heat, cover, and simmer 20 minutes. Combine flour and dry mustard in small bowl. Gradually add about 1/2 cup broth and mix till smooth. Add to simmered soup, along with rest of broth nd milk. Heat to a simmer, stirring occasionally, until slightly thickened. Stir in cheese till melted.