Hazelnut Tiramisu Cake Recipe | Coffee Cake

Ingredients

• 200g hazelnuts
• 225g unsalted butter
• 225g caster sugar
• 1 tsp vanilla extract
• 2 tsp grated orange zest
• 4 large eggs
• 2 egg yolks
• 200g self-raising flour
• 185ml double cream
• 250g mascarpone
• 100g icing sugar
• 1 tbsp Marsala
• 150g good-quality chocolate (70% cocoa solids)
• 25g unsalted butter
• 1/2 tsp sea salt
• 1 tbsp instant coffee powder
• 2 tsp caster sugar
• grated plain chocolate, toasted hazelnuts or crushed coffee beans, to decorate