Christmas chocolate cake - Your Local Advertiser

Ingredients

• 200 g unsalted butter (cut into cubes, plus extra for the tins)
• 200 g dark chocolate (chopped)
• 200 g light brown soft sugar
• 4 eggs
• 250 g plain flour
• 50 g cocoa powder
• 1 tbsp baking powder
• 1 tsp bicarbonate of soda
• ½ tsp fine sea salt
• 1 tsp ground ginger
• 1 tsp ground cinnamon
• ½ nutmeg (finely grated)
• 2-3 tbsp milk
• 200 g unsalted butter (softened)
• 500 g icing sugar
• 1 tsp vanilla bean paste
• ½ tsp ground ginger
• ½ tsp ground cinnamon
• ¼ nutmeg (finely grated)