Step by step

Once the layering has finished, cover the last layer of lasagne with a little béchamel and bake in the oven at 180°C for 20 minutes

You can keep lasagna in the fridge in an airtight container for 2-3 days at most.
Although lasagna has known its greatest fame and has spread across the world since World War II onwards, in ancient Rome there was a similar dish. And we read in ‘The culinary art of Apicius’ that lasagna was the favourite dish of Cicero.