I made some changes & here is my recipe.
Ingredients : Assorted fruit chunks of choice ( I used banana,apple & carrot finely chopped )3/4 cup,1 cup multigrain atta,1/3 cup brown sugar 1/2 tsp baking powder,1/2 tsp baking soda,1 ts[p vanilla essence,1/4 cup oil,1/4 cup yoghurt,a pinch of salt,water to get batter consistency right.
Method : Mix all dry ingredients -multigrain atta,baking soda,baking powder ,sugar & salt.No lumps should remain.Use whisk or fork to mix again & again.Keep aside.
Mix all wet ingredients -oil,yoghurt,vanilla,mixed fruits in bowl nicely.
Make a well in the dry ingredient mix & pour the wet ingrent mix into it.Mix nicely with a whisk.Take care that no lumps remain in the batter.Keep aside.
Take a microwaveable vessel & line it with butter paper.Pour thev cake batter into the vessel on the butter paper.Microwave for 8-9 minutes.After 10 minutes,take it out from microwave & check with fork or knife if cake is done.If still wet ,microwave for 1-2 minutes more.Let it cool.
Take out the vessel .Let it cool outside microwave for 10 minutes.Now put it upside down on a plate.The cake will drop down on plate after some time.If not ,just nudge it from the edges to let it drop down.Cut into desired shapes & serve.
In the snap ,some soft grey coloured lumps can be seen in cake...those are banana pieces.If you would rather have no chopped fruit pieces ,then puree all fruits in blender & use that instead of chopped fruits.