Cut the pork tenderloin into thin pieces, fry in olive oil for 7 minutes.
In the meat, add red onion in half rings, finely chopped chilli, previously cleaned of seeds, basil, cherry halves. Fry another 3 minutes.
Add tomato puree or finely chopped tomatoes to the pan. We salt, we give to extinguish 10 minutes.
At this time, immerse the penne rigata in salted boiling water and cook until al dente.
Drain the water from the ready-made penne rigata, pour them into the ready-made sauce, leave for a minute.
Put the dish on a plate, sprinkle with grated parmesan, decorate with green onions.