4chicken breastsboned and skinned (about 4 oz each)
Instructions
To prepare Caramelized Onions: Combine onions and brown sugar in a nonstick skillet. Cook over moderate heat, stirring often, until onions begin to caramelize and turn golden, 15 to 20 minutes. Stir in wine and vinegar; increase heat to medium-high and bring to a boil. Reduce heat and cook, stirring often, until most of liquid has evaporated, at least 30 minutes--the longer, the better. Set aside.
Preheat oven to 350°. While onions are cooking, combine mustard, lemon juice, pepper, Worcestershire sauce, and garlic. Place chicken breasts in a baking dish that has been sprayed with nonstick cooking spray and cover with the mustard-lemon mixture. Bake, uncovered, 30 minutes or until chicken is no longer pink inside. Place on a warm platter and cover with warm Caramelized Onions.