PREHEAT oven to 350°F. Mix flour, 1/3 cup sugar, the baking powder, baking soda and salt in large bowl. Cut in butter with pastry blender or two knives until mixture resembles coarse crumbs. Add buttermilk and currants; mix just until moistened.

PLACE dough on lightly floured surface; knead 10 times. Shape into round loaf, 2-1/2 inches thick. Place on greased baking sheet. Cut deep 1/2-inch "X" in top of dough; sprinkle with 1 Tbsp. sugar.

BAKE 1 hour or until golden brown. Remove from baking sheet to wire rack; cool completely. Cut into 16 wedges to serve.