4Sauté carrots, celery, red onion, and ground meat in a large pan.
5Add tomato sauce and cook.
6Prepare the pasta dough by mixing flour and eggs.
7Roll out the pasta dough and cut into lasagne sheets.
8Boil the pasta sheets.
9Layer the lasagne in a baking pan, starting with a layer of besciamella (white sauce), then add a layer of pasta sheets and meat sauce, repeating the layers.