In a large bowl, combine flour, baking powder, salt and 3 tablespoons sugar. Cut in softened butter. Add buttermilk, vanilla and egg. Mix well. Add cranberries and any juice in bowl to dough. Mix in a little milk if dough is too dry. Knead lightly a few times until all dough is gathered, and forms a ball. Place on lightly floured surface and pat into two 5 inch or one 10 inch circle, about 1 inch thick. Sprinkle with Turbinado sugar. Cut each circle into 8 wedges. Bake on greased cookie sheet for 15 minutes at 400 degrees. When scones are done, remove from oven and sprinkle with granulated sugar.