Pre-heat oil in a pan and fry the
onions and the peas until light brown for about 5 minutes. Add salt and water. Add the
tomato, lentils, and marjoram to salted water and leave it to cook for 30 minutes until the lentils are soft. Then, mix with the
onions and peas. Pour the mixture into an ovenproof tray, cover with a layer of beaten egg and grated cheese and with the lasagne pasta and repeat this operation until you make a few layers. Sprinkle some grated Parmesan cheese on top and leave to bake in the oven for about 40 minutes.