In large bowl, beat the sugar, shortening with electric mixer until creamy. Add the vanilla and egg, beat for a couple of minutes. Stir in the flour until well mixed.
Divide the dough in half and shape each half into a ball. Wrap them in clingfilm and refrigerate for about 1 hour, until firm.
Bake for 10 to 12 minutes or until the edges are lightly browned. Let them rest for a couple of minutes before transferring them to a cooling rack.
Dust them with icing sugar or decorate them with icing/ chocolate pen.