Grease the 8 inch cake pan with butter or Vegetable oil.sprinkle some flour.
Preheat oven at 180 degree c or( 350 F).
Take a bowl.add flour, baking powder and baking soda.mix and set aside.
In another bowl mix the cocoa powder with milk and sugar.keep aside.
Take a bowl add butter, sugar.mix until creamy.add eggs or beaten Yogurt .
Add vanilla extract and milk.mix until a creamy texture.
Add flour mixture into this smoothie creamy mixture.
Remove 1/2 portion of batter and mix them with cocoa powder mixture.
Now take the greased pan.
To make the layers:Begin from the middle of the pan.take 4 tbsp of white batter then over it add 2 tbsp chocolate batter.repeat this steps until all batter has been used.
Bake for 40 minutes until a toothpick inserted into the center comes out clean.
Remove from oven and let cool for 15 minutes...then serve...
