Method:

Preheat the oven to 180C and prepare two square baking tins.
Place the Golden Cloud Vanilla cake mix into a large bowl.
In a jug, whisk together the oil, water and eggs. Make a well in the centre of the cake mix and add the wet ingredients. Whisk until the mixture is smooth and lump free.
Prepare the Golden Chocolate Cake Mix in a separate bowl, following the same steps as the vanilla cake mix.
Pour half the vanilla mixture into one cake tin and pour half the chocolate mixture into another cake tin. Pour the remaining vanilla batter into the cake tin with the chocolate batter and vice versa for the remaining chocolate batter. Using a skewer swirl both batters around creating a marble effect.
Place in the oven and bake for 15-20 minutes. Remove from the oven and allow to cool completely then cut into 4cmx4cm squares.

Prepare the chocolate glaze; combine icing sugar, cocoa and boiling water in a deep bowl and mix well to a syrup consistency.
Place the coconut in a separate bowl and set up two wire racks over flat baking trays or parchment paper.
Using two forks, dip a square of sponge into the chocolate glaze, turning to coat well. Let it drain a little then transfer to one of the wire racks and repeat the process with 2 more squares.
Take the first square and using clean forks, roll it in the coconut then transfer to the second tray to set. Repeat the process with the whole batch, replenishing the coconut as needed.