Step 1

Preheat oven to 160C (320F)

Step 2

Prepare a 25 x 25 cake tin, spray well with cooking spray or line.

Step 3

In a large bowl add the flour, sugar, cocoa, baking powder, baking soda and salt and mix well until fully combined.

Step 4

Add to this the eggs, vanilla, oil and milk and blend well.

Step 5

Finally add the boiling water and carefully stir until completely blended together.

Step 6

Pour into your prepared cake tin and bake for 35-45 minutes (all tin sizes differ so check often after 30 minutes)

Step 7

In a medium sized bowl combine the icing sugar and cocoa powder and mix well.

Step 8

Add to this the melted butter and vanilla essence and stir well

Step 9

Add water a little at a time until you have your desired consistency

Step 10

Spread generously over the cake, allow to set, slice and serve!

Step 11

Store in an airtight container.