plus 3 tablespoons
Preheat oven to 350 degrees. Mix together first three ingredients, then add butter slices to flour mixture and, using a pastry blender, mix flour and butter until completely crumbly. Add raisins and mix. In a small separate bowl, mix 1 egg and 10 Tablespoons milk. Pour into the flour/raisin mixture and mix until completely moistened and dough is formed. It will be a slightly dry dough ball. Roll out with a rolling pin to 3/4-inch thickness. Cut dough with a 2-1/2 inch biscuit cutter. Place each dough round on an insulated cookie sheet which has been lightly sprayed with a cooking spray. Make an egg wash with the remaining yolk and 1 Tablespoon of milk. Using a pastry brush, brush the top of each round with egg wash and then generously sprinkle tops with remaining sugar. Bake for 15 to 20 minutes or until golden brown on top.
Enjoy with afternoon coffee and tea, or as a breakfast brunch treat.