Preheat oven to 350*. Cook chicken any way you like, I like to roast breasts on the bone in a 350* oven with olive oil and salt an pepper for about 25 minutes.Cool breasts and bone them. While chicken is cooking, saute mushrooms in 2 T. of butter.
Melt 4 T. butter until foamy then stir in flour and cook for 3 minutes. SLowly add cream and chicken stock stirring until smooth. Add all other ingredients and bake in a 350* oven for 30 minutes.