Preheat the oven to 180 degrees top / bottom heat.
Season the minced meat and add the onion cut into cubes. Fry the minced meat and place in a baking dish. Spread the pesto evenly over the top. Chop up the feta cheese and sprinkle over it. Cut the zucchini into slices and fry in a little olive oil. Then also put the slices in the baking dish. Then drizzle the tomatoes over it as needed and finally sprinkle the grated cheese over it. Put in the oven for 30-40 minutes.