My friend Missy P. sent this recipe around after we went blackberry picking a few years ago. Amazing. I've adapted it slightly based on Missy's suggestions--the crust is amazing, so you will want as much of it as you can get.
1 1/2 cups all purpose flour
1 3/4 cups white sugar, divided
1 1/2 teaspoon baking powder
3/4 teaspoon salt
9 tablespoons cold butter
1/4 cup plus 2 T boiling water
4 cups blackberries
2 tablespoons cornstarch
1/4 cup cold water
1 tablespoon lemon juice
1 1/2 teaspoon baking powder
3/4 teaspoon salt
9 tablespoons cold butter
1/4 cup plus 2 T boiling water
4 cups blackberries
2 tablespoons cornstarch
1/4 cup cold water
1 tablespoon lemon juice
* Preheat oven to 400 degrees. Line a baking sheet with aluminum foil.
* In a saucepan, dissolve cornstarch in cold water. Mix in remaining 1 cup sugar (I only used 3/4 cup and it was still pretty sweet), lemon juice, and blackberries. Bring to a boil, stirring frequently. Pour berries in a 9X9 (or similar) baking dish.
* Meanwhile, in a large bowl, mix the flour, 1/2 cup sugar, baking powder, and salt. Cut in butter until the mixture resembles coarse crumbs. Stir in 1/4 cup boiling water just until mixture is evenly moist.Drop dough into the blackberries by spoonfuls. Place dish on foil lined baking sheet.
* Bake 25 minutes in the preheated oven until dough is golden brown.
