Chicken pietro Main DishVery Easy40 min Send this recipe to a friend Print this page Ask a question to the author Post your photo of this recipe Ingredients 4 1/4 cup plus 2 tablespoons balsamic vinegar, divide 1/2 cup plus 2 tablespoons extra virgin olive oil, divided 1/4 cup Dijon mustard 2 tablespoons brown mustard 2 tablespoons honey 2 teaspoons rosemary 2 tablespoons water 1 teaspoon salt 1 pound boneless skinless chicken breast 1 portabella mushroom, sliced View the directions