Step 1

Make the filling: Preheat oven to 375 degrees. Mix together raspberries, granulated sugar, cornstarch, and salt. Pour into a 9-inch square baking dish (2 inches deep).

Step 2

Make the biscuit topping: Whisk together flour, baking powder, granulated sugar, and salt. Cut in butter until largest pieces are the size of small peas. Add cream, and use a fork to incorporate, stirring just until cream is absorbed (there should be lots of loose pieces).

Step 3

Turn out dough onto a clean surface, and knead once or twice, gathering loose bits into ball. Pat dough to a 1 1/4-inch thickness. Cut into 9 rough squares, and place them on top of filling. Brush with cream, and sprinkle with sanding sugar.

Step 4

Bake cobbler until bubbling in center and biscuit topping is golden brown and cooked through, about 1 hour (loosely tent with foil if biscuit topping gets too dark). Let stand at least 30 minutes before serving.