4 chicken breasts, skinned & boned
1/2 tsp. crushed tarragon
1/3 c. white wine or white cooking wine
2 tsp. butter
4 green onions, chopped or 1/4 med. onion, chopped
1/3 c. fresh, sliced mushrooms, if desired

TOPPING:

1 egg white, beaten to stiff peaks
1/2 c. mayonnaise
Parmesan cheese

Place chicken breasts in shallow baking dish. Top with onions and mushrooms. Sprinkle with crushed tarragon, salt and pepper. Dot each breast with 1/2 teaspoon butter. Add cooking wine and bake, uncovered, at 350 degrees for 30 minutes.

Fold mayonnaise into beaten egg and spoon on top of cooked chicken. Sprinkle with Parmesan cheese and bake for an additional 15 minutes until golden brown.