Stiff baking powder + coco powder and flour and set a side....take a big bowl and add eggs + sugar + oil + vanilla essences + milk and mix it well with beater for few mins....it makes cake more soft and fluffy.

Now add all the dry ingredients and mix it well for good 4 to 5 mints....now butter over prove lasagna dish and put all the mixture and place it in oven till the toothpick comes out clean

Let it come on room temperature then add all the chocolate sauce on the top of the cake and decorate as u like !