Sieve together maida,powdered sugar,cocoa powder,soda powder.
Mix oil,milk and vanilla essence.
Beat well the liquid,till it becomes fluffy.
Now add dry powder into liquid and mix in one direction by cut and fold method.
Grease a microsafe bowl.
Transfer the batter into microsafe bowl.
Add choco chips and micro for 5 minutes.
Take out and cut into pieces when completely cool.