Southern Blackberry Cobbler is the best of southern summer desserts. You'll love its warm, buttery dough and tart-sweet blackberries with a scoop of vanilla ice cream.
Preheat the oven to 400 F. Line a baking sheet with foil. Set aside. Add the flour, 1/2 cup sugar, salt, and baking powder in a large mixing bowl. Whisk together.
In a separate mixing bowl, combine the cold water and cornstarch mixing to dissolve. Add the blackberries, the remaining 1/2 cup sugar, vanilla, and cinnamon. Stir well to combine.