If you don't have a cast-iron skillet, don't worry! There are several alternative pans you can use. You can use an oven-safe stainless steel skillet or an oven-safe non-stick skillet. If you don't have an oven-safe skillet you can also use a Ceramic or Porcelain Baking Dish: Similar to the glass baking dish, you can use a ceramic or pie dish for the Tarte Tatin. Make the caramel in a separate saucepan on the stovetop first, then transfer everything to the baking dish before baking in the oven.