Tangy Ranch Chicken

2/3 C ranch dressing
1/3 C mustard
3 Tbs brown sugar
6 oz boneless skinless chicken breasts

Mix salad dressing, mustard, and sugar. Pour 1/2 cup sauce into serving bowl. Coat chicken with remaining sauce in 3-qt. greased baking dish. Bake chicken at 350' for 25 minutes until cooked. Serve with reserved sauce.