3 tbsp. butter
1 med. onion, finely chopped
3 tbsp. flour
3 c. chicken broth
1 1/2 c. sliced fresh mushrooms
2 c. cooked brown rice
1 c. half and half
1/4 to 1/2 tsp. salt
Dash of pepper

Melt butter in large saucepan. Saute onion, stir in flour and continue stirring over low heat, until flour expands. Gradually add chicken broth, stirring constantly until thickened. Add remaining ingredients and heat, slowly, stirring often.