1/2 lb. mushrooms
1 sm. onion, quartered
2 c. chicken broth
3 tbsp. butter
3 tbsp. flour
1/2 c. milk
1 1/2 c. half and half
Salt and fresh ground pepper
1 1/2 tbsp. dry sherry (I use cooking sherry)
Sliced mushrooms

Finely chop 1/2 pound mushrooms and onions in blender or processor about 1 minute. Transfer to heavy medium saucepan. Add chicken broth. Cover and simmer 15 minutes.

Meanwhile, melt butter in heavy medium saucepan over medium low heat. Add flour and stir 2 minutes. Add milk and cook until thickened, stirring occasionally about 2 minutes. Mix in half and half. Stir into mushroom mixture. Season with salt and pepper. Stir in sherry.

Garnish with sliced mushrooms. Can be prepared 1 day ahead and refrigerated.