A cast-iron skillet is the best choice for getting those perfectly crispy edges and a gooey center in your cookies, but if you don't have one, you might be able to get away with using any oven-safe pan or a cake pan instead. Just a heads up, though—the baking time might need a little tweaking. I haven't tested this out with a different pan myself, so if you decide to give it a shot, I'd love to hear how it turns out for you in the comments.