Preheat the oven at 180'c for 10-15 minutes.

In a pan, heat milk. Once it starts to boil, add butter. 

Bring them to a boil and let the butter melt completely into the milk. 

In a mixing bowl, whisk yogurt. Then add castor sugar and whisk again.

Sieve all purpose flour, baking powder, baking soda and a pinch of salt into the yogurt.

Whisk the dry ingredients with the yogurt.

Then add the hot milk and butter mixture in batches. Also, add the vanilla extract. Whisk well to incorporate the wet and dry ingredients. 

Then add the hot milk and butter mixture in batches. Also, add the vanilla extract. Whisk well to incorporate the wet and dry ingredients. 

 Pour the ready batter into a 7" parchment lined square tin or a 7"loaf pan. 

 Bake it for 40 minutes at 180'c. Once the cake is baked, cool it for about an hour before unmolding.

Slice the cake once it cools down completely.