Chocolate and Buttermilk Slab Cake Recipe

Ingredients

• 280 gm caster sugar
• 120 gm dark chocolate (54%-58% cocoa solids), finely chopped
• 90 gm butter, diced
• 225 gm (1½ cups) plain flour
• 1½ tbsp Dutch-process cocoa, sifted
• ¾ tsp bicarbonate of soda
• 110 ml buttermilk
• 1 egg, plus 1 egg yolk
• Freeze-dried raspberries (optional; see note), to serve
• Chocolate-buttermilk frosting
• 150 gm dark chocolate (54%-58% cocoa solids)
• 100 gm softened butter
• 120 gm (¾ cup) pure icing sugar
• 70 ml well-shaken buttermilk