INGREDIENTS Serves 12 – Approx. 255kcal per slice 500g whole raw beetroot (3-4 medium beets) 100g unsalted butter, plus extra for the tin 200g bar plain chocolate (70% cocoa) 1 tsp vanilla extract 250g caster sugar 3 eggs 100g plain flour 25g cocoa powder METHOD Pre-heat oven to 180C/160C fan/gas 4 Peel the beetroot (about…