Stir-Fry Sauce Spread onions in bottom of a lightly greased 13x9-inch (33x23 cm) glass baking dish. Arrange chicken on top. Stir curry powder into the jar of Oriental Sauce, and then pour sauce over chicken breasts. Bake, uncovered at 190ºC (190C) for 40-45 minutes, or until chicken is no longer pink inside. Baste 2 or 3 times during cooking.