Rice & Zucchini Crostata

This is a generously proportioned version of the delicious rice-and-zucchini crostata, or tart, that my cousin Lidia prepared when our family first visited Genova, nearly fifty years ago. She made hers in a small baking pan, and mine is the same, only bigger! I use a half-sheet baking pan (a jelly-roll pan will work, too) lined with the olive-oil-based dough that has no leavening, is easy to make, and fantastic to roll. The large size of this crostata is necessary, I find, because the crostata disappears right away. Whether I put it on a buffet in bite-sized party pieces, bring it to a picnic, or serve it as a plated appetizer or main course with salad, everyone loves it—and has to have another piece. And in the unlikely event you do have leftovers, they can be frozen and reheated—just as good as when freshly baked. The procedure is straightforward and quick, though there’s one important (and interesting) step you must leave time for: steeping the uncooked rice with the shredded zucchini. Since squash is a watery vegetable and rice is dry and starchy, this steeping allows the rice to extract most of the vegetal water from the zucchini. In this way, the grain is softened enough to cook during the baking time, and without absorbing all the liquid from the ricotta and milk. The result is a moist, creamy, and flavorful filling.