Mixed Berry Cobbler

Method

1. 1
   Prepare the berry filling by combining mixed berries, sugar, cornstarch, lemon juice, vanilla extract, cinnamon, and salt.
2. 2
   Prepare the biscuit topping by mixing all-purpose flour, sugar, baking powder, and salt; cut in the cold cubed butter until combined.
3. 3
   Add the cold buttermilk to the biscuit mixture and combine.
4. 4
   Top the berry mixture with the biscuit dough, brushing with an additional tablespoon of cold buttermilk and sprinkling with coarse sugar before baking.