9 by 13 cake in your favorite flavor baked and left in the pan. Ice it with light orange frosting. Then take black frosting and make circles on it .
Begin in the center with just a dot of black frosting. Then circle that getting bigger until you get to the outer edges of the cake. Then take a toothpick and drag it from the center to the outside of the cake.
Making a web effect. I then took 2 spider rings that my daughter had and placed them in the center of the web. It was totally cool.