2 | cups unbleached all-purpose flour (10 ounces) |
1 | tablespoon baking powder |
1/2 | teaspoon table salt |
1 | large egg |
1 | cup granulated sugar (7 ounces) |
4 | tablespoons unsalted butter , melted and cooled slightly |
1 1/4 | cups sour cream (10 ounces) |
1 1/2 | cups frozen blueberries , preferably wild |