Chicken Cordon Bleu with Mushroom Sauce - design Gumbo

Ingredients

• 3 chicken breasts – skinned, boned, and split
• 6 slices proscuitto
• 6 slices Swiss cheese
• 1 1/3 cups breadcrumbs
• 2 T. Parmesan cheese
• 1/3 c. butter or margarine, melted
• 2 T melted butter or margarine
• 1/2 t salt
• 1/2 c sliced fresh mushrooms
• 1/4 c chopped onion
• 1 T flour
• 1 c milk
• 2 T chopped chives
• 1/4 t pepper
• 1 c sour cream
• 1/4 c chopped fresh parsley