Traditional Cinnamon-Walnut Coffee Cake Recipe

In a small bowl, combine the flour, sugar, baking powder, salt and cinnamon. In another bowl, whisk the egg, milk and butter; stir into dry ingredients just until moistened. Stir in raisins and 1/2 cup walnuts. Transfer to a greased 9-in. square baking pan. Sprinkle with cinnamon-sugar and remaining walnuts. Bake at 375 ° for 20-25 minutes or until golden brown and a toothpick inserted near the center comes out clean. Cool on a wire rack.