Preheat oven to 400 degrees F (200 degrees C). Line a baking sheet with aluminum foil.
Mix flour, 1/2 cup sugar, baking powder, and salt in a bowl; mash butter into the flour mixture until crumbly. Stir boiling water into the flour mixture to form a dough.
Dissolve cornstarch in cold water in a separate large bowl. Stir blueberries, raspberries, 3/4 cup sugar, and lemon juice into the cornstarch mixture; transfer to a cast-iron skillet and bring to a boil, stirring frequently. Drop dough into the skillet by the spoonful. Put skillet onto the prepared baking sheet.
Bake in preheated oven until the topping is golden brown, about 25 minutes.
Get more stuff like this
Subscribe to our mailing list and get interesting stuff and updates to your email inbox.
Thank you for subscribing.
Something went wrong.