I don't like insulated cookie pans for baking Springerle! At first I thought it was just my timer, and then maybe my oven was too hot, and then perhaps I was not paying attention. But, no, really, I have now kept copious notes and Springerle cookies really do over-bake on insulated sheets. I have tested on heavy duty commercial sheet pans against insulated cookie sheets using the same time and temperature and they always over-brown on the bottoms and are too dry when I use the insulated cookie sheets. So , while I am a fan of insulated cookie sheets for soft gooey cookies, such as classic chocolate chip cookies, I recommend that you do NOT use them for Springerle baking. Stick to regular heavy duty cookie sheets for best results.