
Brown chicken breast.
Place breasts in oven dish.
Mix together the onion, garlic, cream, broth, salt, white pepper and worcestershire and mix well.
Pour over the chicken and bake 2 hours at 300 degrees.
After baking, remove breasts; strain juices into saucepan.
Add 2 tablespoons flour and 1/2 cup water.
Mix with whisk until thickened.
Add milk if too thick.
Pour sauce over breasts and garnish with parsley.