Blackberry Cobbler with Frozen Berries

Instructions:

1. Preheat your oven to 350°F (175°C).
2. In a large bowl, gently toss the frozen blackberries with 1/2 cup sugar, lemon juice, cornstarch, vanilla, and cinnamon.
3. Transfer the berry mixture immediately into a 9x9 inch baking dish, spreading it evenly.
4. In the same mixing bowl, whisk together the flour, remaining 1/2 cup sugar, baking powder, and salt.
5. Stir in the milk and melted butter until just combined; the batter should remain slightly lumpy.
6. Spoon the batter over the berries in dollops, spreading lightly with a spatula but leaving some peaks for crispiness.
7. Bake for 50-60 minutes until fruit juices bubble at the edges and the topping is deep golden brown and firm.
8. Let the dish rest for 15 minutes before serving to allow the syrup to set.