Salted dark chocolate, rye & courgette cake - Good Food Middle East

Ingredients

• 150g butter, melted, plus extra for greasing
• 80g spelt flour
• 120g rye flour
• 8 tbsp cocoa powder
• 2 tsp baking powder
• 1 tsp bicarbonate of soda
• 280g light brown soft sugar
• 200ml buttermilk
• 2 large eggs
• 1 tsp vanilla extract
• 2 medium courgettes, grated (approx 350g weight)
• 100g dark chocolate (75-80%) finely chopped
• 100g dark chocolate, finely chopped
• 170g unsalted butter, softened
• 350g icing sugar
• 4 tbsp cocoa powder
• 2 tbsp milk
• 1 slice rye bread, optional
• ½ tsp flaky sea salt