Saucy Herbed Chicken Breasts

Directions

1. Heat oven to 350 degrees F. Heat 2 tablespoons butter and the vegetable oil in a 9 by 13 inch baking pan in the oven until melted. Place chicken in baking dish; turn to coat with butter mixture. Arrange chicken, skin sides up, in dish. Bake uncovered 1 hour, drain.
2. Cook onion, garlic and mushrooms in 1/4 cup butter in 10 inch skillet until onion is tender; stir in wine. Stir cornstarch into water until smooth; stir into wine mixture. Heat to boiling, stirring constantly. Boil and stir 1 minute. Remove from heat.
3. Stir in yogurt, salt and tarragon leaves; pour over chicken. Cover tightly with aluminum foil. Bake 15 minutes or until chicken is done.
4. Remove chicken to a warm platter. Stir sauce; spoon over chicken. Sprinkle with additional tarragon leaves, if desired.