My first thought was: Am I crazy for wanting to make a heavy zucchini gratin on a hot summer day? The short answer is yes, but this year I am facing an unprecedented invasion of zucchini. Which is causing me to rethink my strategies for dealing with them. Special circumstances require special measures. Zucchini gratin goes completely against my basic tenets of summer food: (a) It should be colorful and vibrant; (b) only eat food that can be served raw or grilled, and (c) If I can’t cook it outdoors than skip it. In fact, it is my goal to never turn my oven on in the Summer….