Le Creuset Cast Iron Tatin Dish 25cm. Hand crafted from premium cast iron at our foundry in northern France, our Cast Iron Round Tatin Dish fuses tradition with modern design. A traditional tatin recipe tenderises and caramelises the ingredients on the hob first, before adding the pastry to the top and transferring the dish to the oven for baking. The tart should then be turned upside down before serving. Our Tatin Dish can be used in the oven, on the hob and under the grill ensuring total versatility.