For a light entree on a summer night, this dish is just the ticket. Salting and draining the zucchini and tomatoes before baking prevents them from releasing excess moisture as they bake, so the gratin stays firm, not soggy.
I attended a Boy Scout pot luck with my son several years ago and was introduced to these heavenly potatoes. The Scout leader was kind enough to share. It is a recipe that is hard to mess up but yet is delightful enough to serve at a formal dinner party. We seldom have leftovers and when we do my family fights over who gets to eat them. It is an easy recipe to decrease or increase depending on the needs of your family.
This is one of those recipes where I will tell you, Don't judge the book by it's cover. This is a very misleading dish because appearance wise it doesn't look