Grind the biscuits to a powder.
Add sugar, baking powder and cocoa powder to it. Mix them well.
Add milk to it and mix again.
Grease a cake tin or put a baking paper to it.
Pour the batter into it and microwave for five minutes
Insert a tooth pock to check if it's done, if the tooth pick comes clean, it's done.
Let stand for ten minutes.
Parle G biscuit cake is ready to serve.