In a large mixing bowl, cream margarine/buter and sugar until light and fluffy. Gradually beat in the egg to incorporate. Stir in syrup and melted chocolate. Sieve in flour, salt, bicarbonate of soda and ground cinnamon; add to creamed mixture. Chill 1 hour.
Roll dough 0.5cm thick on a well-floured surface. Cut into shapes.
Bake on an ungreased baking tray for 10 to 12 minutes.