Put the chocolate biscuits in a ziplog bag and crush to crumbs using rolling pin. Or put in food processor.

Add in baking powder, mix well. Then add milk and mix well.

Pour the batter into lined baking tin, pop in preheated oven at 180C, bake for about 30 - 35 minutes, or until fully cooked. Let it cool completely.

For the chocolate ganache: cook the heavy cream in saucepan under medium heat, when there are bubbles around the edge (not boil), remove from heat.

Pour into chocolate, let it rest for 5 minutes. Then mix well.

Pour the ganache on top of the cake, done. Enjoy!