Hedgehog cake - Good Food Middle East

Ingredients

• 150g unsalted butter, plus extra for greasing
• 150g plain chocolate, broken into pieces
• 150g plain flour
• ½ tsp baking powder
• ½ tsp bicarbonate of soda
• 200g light muscovado sugar
• 2 large eggs
• 150g soured cream
• 1 tsp vanilla extract
• 2 tbsp cocoa powder
• 2 tbsp hot water
• 150g unsalted butter, softened
• 300g icing sugar, sieved
• 2 x 134g boxes chocolate Flake bars
• 2 chocolate chips
• 2 gold or silver balls
• 1 round chocolate