See the 'Top Tip' for how to skip the scales and use a yoghurt pot instead! Go with the rosewater and lime flavour or swap in lemon or orange zest. Preheat the oven to 190C/170C Fan/Gas 5.

Meanwhile, in a small bowl, whisk the lemon yoghurt until smooth. Crumble the biscuits roughly in a separate bowl. Once the blueberries have cooked down, stir in the cornflour paste and cook ...