1.
Remove skin from chicken breasts and wipe dry with paper towel and marinate chicken 1/2 hour in dressing
2.
Pour off dressing, saving it for sauce
3.
Heat a little oil in a skillet and brown breasts on both sides
4.
Remove chicken and add mushrooms and onions, sautéing until onions are slightly browned. Add sherry and reserved dressing
5.
Replace chicken and spoon sauce over them. Cover and simmer over low heat 15 minutes or until liquid has nearly evaporated
6.
Place breasts on a serving platter along with mushrooms
7.
Sprinkle each serving with cheese and place under hot broiler for just a minute, until cheese has slightly browned
8.
Serve with parsley garnish