Try this Vegetable Tian recipe, or contribute your own.
A proper Provencal tian relies entirely on disciplined moisture management and uniform geometry. Originating from the French region of Provence, this traditional earthenware-baked dish transforms summer produce through slow dehydration and concentration. Slicing vegetables to a uniform quarter-inch thickness ensures that dense tubers and watery squashes soften at the exact same rate in the heat of the oven.
Start by sweating the onions until fully translucent in a skillet before transferring them to the base of a nine-by-thirteen-inch baking dish; this pre-cooking step prevents waterlogging from the bottom up. Alternate tightly packed overlapping rounds of potatoes, tomatoes, zucchini, and eggplant. Cover the dish with foil for the initial thirty-five minutes to steam the dense root vegetables thoroughly. Remove the barrier and add cheese during the final forty minutes to achieve proper browning without burning the dairy fats.