Lasagne with Wild Mushrooms & Truffle Oil

Lasagne is still most often eaten in its classic Bolognese version, with layers of rich meat ragù and béchamel. This version uses wild mushrooms and is served seasonally with truffle shaved over. If you are a mushroom hunter, then any mixture of woodland fungi will do. If you wish to buy fresh cèpes then grit your teeth – there is no getting away from the expense of these ingredients. However, help is to hand: by adding a small percentage of dried cèpes to flat-cap cultivated mushrooms and