Fry the meat in a little oil. Cut the spring onions into rings and fry them briefly, add the crème fraîche and stir. Add the zucchini. Add 3 to 4 chopped tomatoes. Season everything with salt and pepper as needed. You don`t need much with the meat. Put everything in a baking dish, then sprinkle the cheese over it. Bake the casserole at 200 degrees for about 20 minutes.