Summer Blackberry Cobbler

Ingredients

• 5 cups fresh blackberries
• 1/3 cup turbinado (washed raw) sugar
• 2 tablespoons quick-cooking tapioca
• 1 tablespoon lemon juice
• 1-1/2 teaspoons cornstarch or arrowroot flour
• 1 cup all-purpose flour
• 1/4 cup sugar
• 1-1/4 teaspoons baking powder
• 1/4 teaspoon salt
• 1/4 teaspoon ground cinnamon
• 3 tablespoons cold butter
• 1/3 cup fat-free milk
• Vanilla ice cream, optional