Roll dough out into rectangular shape a little less than a 1/2 inch thick. Combine sugar, cinnamon, raisins and walnuts. Spread melted butter over dough and sprinkle with sugar mixture. Roll up along the long side of dough. Form into a wreath and pinch ends together. Place on greased baking sheet. Using scissors or a sharp knife slice 3/4 of the way through every 1 1/2 inches. Arrange slices out on sides to form wreath. Cover with damp cloth and let rise in warm place for 45 minutes. Bake at 350 degrees for 45 minutes.