Directions

1. Preheat oven to 425 degrees. Line a baking sheet with parchment paper. In a bowl, stir together flour, baking powder, baking soda, salt, and 2 tablespoons sugar.
2. With a pastry blender or two knives, cut in butter until mixture resembles coarse meal. Stir in currants. Make a well in center; add buttermilk and egg, and stir just until combined (do not overmix).
3. Transfer dough to a lightly floured work surface; knead 5 or 6 times. Pat into an 8-inch disk. With a floured 2 1/4-inch biscuit cutter, cut out rounds. Reroll and cut scraps once.
4. Transfer to baking sheet, about 1 1/2 inches apart. Brush rounds with milk; sprinkle with 1 tablespoon sugar. Bake until scones are golden brown, 12 to 15 minutes. Let cool on a wire rack. Serve warm or at room temperature.