Answer:
Here is an easy & proven recipe:
Blackberry Cobbler
INGREDIENTS 1 cup butter or margarine, divided 1 cup sugar 1 cup water 1 1/2 cups self-rising flour* 1/3 cup milk, room temperature 2 cups fresh or frozen blackberries 1/2 teaspoon ground cinnamon 2 tablespoons sugar
DIRECTIONS In a 10-in. round or oval baking dish, melt 1/2 cup butter; set aside. In a saucepan, heat sugar and water until sugar melts; set aside. Place flour in a mixing bowl; cut in remaining butter until fine crumbs form. Add milk, stirring with a fork until dough leaves sides of bowl. Turn out onto a floured surface; knead three or four times. Roll out to an 11-in. x 9-in. rectangle 1/4 in. thick. Spread berries over dough; sprinkle with cinnamon. Roll up, jelly-roll style. Cut into 1/4-in. thick slices. Carefully lay slices in baking dish over butter. Pour sugar syrup around slices (syrup will be absorbed). Bake at 350 degrees F for 45 minutes. Sprinkle sugar over top and bake 15 minutes more. Serve warm or cold. (*If self-rising flour is not available, use 1-1/2 cups all-purpose flour plus 1/4 teaspoon salt and 2-1/4 teaspoons baking powder.)