This looks delicious in the picture, but I was disappointed with how mine turned out. Just because it's cheesy doesn't qualify this dish as a gratin. The flour/milk mixture did nothing for the recipe, it just clumped. I would recommend cooking the jalepeno with the onion, maybe in some butter. Adding the zucchini at the end was not enough time to have it cook properly, even with the broiling. Adding it earlier would likely overcook it. I won't be attempting this again, it was that unappetizing.