Pink grapefruit muesli bars

Melt the sugar, butter and golden syrup together in a small saucepan. Stir in the oats, nuts and raisins. Coarsely grate the grapefruit zest, add it to the mixture and stir until everything is evenly mixed. Spoon the mixture into the prepared tin and baked for about 25 minutes, until golden and firm.

Leave to cool for 10 minutes, and then cut into bars. Leave to cool completely and transfer them to a cooling rack.

Cut the grapefruit in half and squeeze the juice from just one half into a small bowl. Add the icing sugar and stir until smooth. Drizzle the icing over the bars and leave to set. Store in an airtight tin.