Step 1
Heat the oven to 375 degrees. To prepare the berries, place in a bowl and toss with the sugar and flour. Set aside.
Step 2
To make the dough, mix the flour, salt, sugar and baking powder in a bowl. Cut in the butter until mixture resembles coarse meal. Add the cream and mix lightly, just until the dry ingredients are moistened.
Step 3
Put the blueberries in a 1½-quart gratin or baking dish. Make patties out of the dough, 2 to 2½ inches in diameter and ½-inch thick. Arrange them over the top of the berries. Bake until the topping is brown and the juices bubble thickly around it, about 35 to 40 minutes.
Step 4
Let cool slightly. Serve warm, with cream to pour on top, if desired.