Instructions:
Preheat Oven & Prep Pan: Start by preheating your oven to 350°F (175°C). Lightly grease an 8×8 inch baking dish.
Mix Dry Ingredients: In a large bowl, combine 1½ cups flour, ⅓ cup brown sugar, ⅓ cup sugar, 1½ tsp baking powder, and ½ tsp salt. Stir these together until they are well mixed.
Add Butter: Introduce the cubed butter to the dry mixture. Using a pastry cutter or your fingers, blend the butter into the mixture until it resembles coarse crumbs. This step is crucial for creating a flaky topping that’s absolutely divine.
Boil & Mix: Pour ⅓ cup of boiling water into the mixture and stir until everything is just combined. The dough should be moist but not overly wet.
Layer the Filling: Spread the blackberry filling evenly at the bottom of your prepared baking dish. If you’re using fresh blackberries, you might want to sprinkle a little sugar over them to enhance their natural sweetness.
Top It Off: Spoon the dough over the blackberry filling, spreading it gently (it’s okay if it’s not perfectly even). Sprinkle the tablespoon of coarse sugar over the dough for a sparkling finish.
Bake: Place your cobbler in the preheated oven and bake for 35 minutes, or until the topping is golden brown and the filling is bubbly.
Enjoy!