Cream butter, vanilla and sugar until pale and add in 2 eggs and cream it again. Add sifted flour and cornstarch. Chill the dough in the chiller for 15 minutes.
Roll the dough and cut it with a cookie cutter.
Bake at 180�C in the oven for 15 minutes depending on the size of the cookies.
Royal Icing
Mix all the ingredients and adjust the consistency with water.
Divide and colour. Pipe the icing on top of the cookies based on the design.