In a bowl, stir together flour, 1/2 cup sugar and baking powder; cut in butter. Combine eggs, vanilla and milk; add to dry ingredients and stir just until moistened. Add raisins. Drop by tablespoonfuls onto greased baking sheet. Combine the cinnamon and remaining sugar; sprinkle over buns. Bake at 325° for 20-25 minutes or until light golden brown. Serve warm.