Malteser cake - Good Food Middle East

Ingredients

• 80g salted butter , cut into cubes, plus extra for the tin
• 100g dark chocolate , at least 70% cocoa solids, roughly chopped
• 50g cocoa powder
• 80g malted chocolate drink powder
• 250g plain flour
• 300g golden caster sugar
• 1½ tsp bicarbonate of soda
• 1 tsp baking powder
• 2 eggs , beaten
• 250ml buttermilk
• 200ml brewed coffee
• 1 tsp vanilla extract
• 400g dark chocolate , at least 70% cocoa solids, roughly chopped
• 50g malted chocolate drink powder
• 50g golden caster sugar
• 50g salted butter
• 400ml double cream
• 150g mascarpone
• milk chocolate shavings
• sprinkles
• Maltesers