Make delicious creamy butter icing with "Creamy White Margarine"
Creamy Butter Icing Recipe:
1kg Icing Sugar
150g Creamy White Margarine (Soften Margarine in microwave but not runny)
10ml Vanilla Flavour
75ml Boiling Water
Mix everything together and beat with electric mixer for about 3 min until fluffy.  
Add desired colour.  Cover the cake or use with piping bag.