For the pasta casserole, sauté the onions and add the minced meat. Add the canned tomatoes cut into pieces and sauté.
Add some tomato paste. Add the diced peppers and zucchini. Season well. Put the pre-cooked but still al dente pasta together with the farschi in a baking dish.
Cover with béchamel sauce and sprinkle with cheese. Bake for 30 minutes.