Blackberry Cake Filling - cooking recipe

Ingredients

1 (6 ounce) container blackberries, mashed
3/4 cup confectioners' sugar
2 teaspoons cornstarch

Preparation

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.