Melt the chopped chocolate and butter together in a microwave or saucepan. Let cool for few minutes.
Sift or mix the dry ingredients that is flour, salt and baking powder together in another bowl. Keep aside.
Beat together the sugar, egg, vanilla and coffee for a few minutes using beaters or a whisk until its light brown and slightly frothy.
Add the chocolate-butter mixture and mix until smooth
Add the flour mixture and mix until you can't see flour anymore.
Fold in the chocolate chips if using.
The dough will be like a thick batter like brownie batter.
Chill for half hour or so until firm enough to handle.
Preheat oven to 180 degrees celsius. Make balls of around 2 inch diameter and place on an unlined and ungreased baking tray, Keep around 2 inches between them as these cookies spread a lot.
Bake 10-13 minutes at 180 C( I did 12 ) until brownies are dry and have cracks on top. They ll still be soft. Cool on tray for 3 minutes and transfer to rack to cool completely.