2) Beat with a handheld electric mixer until it reaches a spreading consistency. At this time it may be necessary to add a tablespoon of double cream, or more, if frosting gets too thick. Just be sure to add cream in small amounts because you can always add to, but you can't take away.
3) Frost your cake and sprinkle the top with chopped nuts, if desired.
Cook's Note: To fix runny icing, add additional icing sugar until the consistency is right.