*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
**Nutrient information is not available for all ingredients. Amount is based on available nutrient data.
(-)Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.
Mix blackberries, confectioners' sugar, and cornstarch together in a saucepan; bring to a boil. Cook blackberry mixture, stirring constantly, until sauce is heated through and thickened, about 1 minute.