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.
All you need is a box of cake mix, a container of Greek yogurt and a cup or orange juice to create this low-fat cake that tastes just like an orange creamsicle!
