For the frosting
Preheat the oven to 180°C, gas mark 4.
Heat the orange juice and zest in the microwave and add to the dried fruit cake mix. Allow to steep.
Meanwhile, beat the eggs and sugar in a mixer fitted with the whisk attachment until light - about 5 minutes. Add the rest of the ingredients and mix well. Finally, add the soaked fruit.
Spoon into a greased 12-hole doughnut pan, filling it two-thirds full. Bake in the preheated oven for 10-15 minutes or until cooked through and springy to the touch.
Remove from the oven, allow to cool slightly in the tin before turning out. Wash, dry and re-grease the pan and bake the remaining batter.
To make the frosting, combine the butter, brown sugar, almond extract and icing sugar and gradually add the boiling water to form a thick frosting.
Dip the doughnuts into the frosting and allow to set on a cooling rack.
Serve with marzipan stars and edible gold dust.