Preheat the oven to 180˚C. line a baking tray with parchment paper.
In a bowl, melt the chocolate and butter over a saucepan set over low heat with simmering water.
In the meantime, Place the sugar and eggs in a bowl and whisk until light and fluffy.
Fold in the melted chocolate mixture and fold over the cocoa powder and flour.
Stir in the extra chopped chocolate into a loose batter. Place the mixture in the fridge for 15-30 minutes to set.
Spoon golf ball size cookies on your prepared baking tray and place in the oven.
Bake for 9-10 minutes until just set yet still slight under cooked like a brownie texture. Remove from the oven and set aside to cool for 10-20 minutes to settle the cookies and to help lift the cookies without breaking.
In a small bowl, combine the icing sugar with some water to create a glaze. Place the glaze in a small piping bag and decorate the cookies such has a spider web or any creative ideas!
Enjoy within a day for best flavours and at room temperature!