Filling: 7 medium peaches (ripe but firm) 1 teaspoon sugar per peach 1 teaspoon cornstarch 1 tablespoon lemon juice pinch table salt Biscuit topping: 1 cup unbleached all-purpose flour 3 tablespoons sugar 1 teaspoon baking powder 1/4 teaspoon salt 5 tablespoon unsalted butter (room temperature; cut into 1/4 inch cubes) 1/3 cup yogurt (whole-milk) additional [...]