Cut the chocolate, but not to finely and add. Mix together then roll balls of mixture to about 2cm by 2cm and place on a baking tray with baking parchment on. Be careful not to put the cookies too close together.
Place in preheated oven for 7-10 minutes. Repeat until all cookies are cooked.
I use different kinds of chocolate and add nuts. For double chocolate cookies simply replace 50g flour with 75g chocolate powder.