Just know that it's important to bring the glaze to a boil over medium-low ... when it comes time to bake the cake, simply mix up your own homemade pumpkin pie spice. Is butter or oil better ...

For the cake, place the whole orange in a small saucepan, cover with boiling water and boil for 30 minutes, or until soft. Leave to cool. When the orange is cold, cut in half and remove any pips.