Mocha walnut crumble cupcakes | Sainsbury`s Magazine

Ingredients

• 4 large eggs
• 150g dark brown soft sugar
• 200g unsalted butter, melted
• 200g self-raising flour
• 1½ tsp baking powder
• 2 tbsp good-quality instant coffee granules
• 1 tbsp milk
• 3 tbsp golden syrup
• 100g walnut halves, roughly chopped
• 100g dark chocolate (70% cocoa), in chunks
• 150g plain flour
• 75g demerara sugar
• 75g cold unsalted butter, chopped
• 100g walnut halves