##Leek## Clean, wash and cut into thin rings. ##Clean mushrooms##, wash and quarter them if necessary. Dice bacon and fry it crispy in a pan without fat. Add the mushrooms and fry them for about 5 minutes while turning. Add leek and
Fry for 2-3 minutes. Season to taste with salt and pepper
Whisk eggs, milk, ##cream## and starch. Season with salt and pepper. Grate parmesan. Wash thyme, dab dry and chop. Stir thyme and parmesan, except for 2 tablespoons, into the egg cream.
Grease a rectangular casserole dish. Preheat oven (electric cooker: 175 °C/circulating air: 150 °C/gas: level 2). Spread some egg cream thinly on the bottom of the mould. Alternately layer lasagne plates, leek mixture and egg cream.
Finish with lasagne and egg cream and sprinkle with 2 tablespoons of parmesan. Bake in a hot oven for about 45 minutes.