Take dry ingredients and sieve them together.
Add yoghurt.
Add oil
Add milk, mix them to a smooth batter. Divide it into parts.
Take one part and put vanilla essence and dry fruits to it. In the meanwhile, pre-heat the microwave.
Grease the tin with a little ghee or oil and put the vanilla batter into it.
Bake it for two minutes.
To the other part, sieve the cocoa powder and mix with it.
Pour it over the half baked cake.
Again bake it for four to five minutes. To check if it is done, insert a knife and see, it should come out clean. Keep it on the rack for sometime
Later, slowly remove from sides and tilt it to a wide plate.
Cut it to desired shape and serve.