Preheat oven to 180 degrees. Mix Flour, Baking Powder & Baking Soda.

Take butter and sugar in a bowl and beat it fluffy and add vanilla extract.

Now add milk and half flour mix and fold it gently.

Now add the remaining flour and fold it

Now divide the batter into 2 bowls. To one bowl add cocoa powder and fold gently.

Take a pan. Spoon vanilla batter then chocolate batter and repeat it till completely done.