In a large bowl stir together the cornstarch, sifted, and the granulated sugar and add the blueberries and the lemon juice. Toss the mixture untilIt is combined well and transfer it to a buttered 10-inch (6-cup) deep- dish pie plate. In a bowl combine well the flour, the brown sugar, forcedThrough a sieve, the baking powder, the salt, and the cinnamon, add the butter, and blend the mixture until it resembles coarse meal. Add 1/4 cupPlus 2 tablespoons boiling water and stir the mixture until it just forms a dough. Drop 1/4 cupfuls of the dough over the blueberry mixture and bake the cobbler on a baking sheet in the middle of a preheated 400F.Oven for 30 to 40 minutes, or until the topping is golden and cooked through. Serve the cobbler warm with the ice cream.Serves 6.
