1. Combine sugar, spice, eggs and pumpkin.
2. Pour into an ungreased 9x13-inch pan. Sprinkle with dry cake mix.
3. Evenly drizzle with melted margarine. Sprinkle with nuts.
4. Bake at 350 degrees for 40 to 50 minutes until golden brown.
5. Chill and cut into squares. Serve topped with whipped topping.