Pour the milk in batches into the saucepan ... the sauce for 10 minutes until thickened slightly. To assemble the lasagne, place a quarter of the tomato sauce into the bottom of a small/medium ...
Remove from the heat and leave the milk to infuse for 10 minutes. Half fill a large saucepan with water and bring to the boil. Add the leek ‘lasagne’ and bring the water back to the boil.