Crispy edges can pose a problem but are preventable. Mostly you want to be sure that your lefse edges are not getting rolled too thin, and then try using a bit less flour on your pastry board near where the finished edges of your lefse fall. You want a uniform thickness throughout your lefse sheet for even cooking. A spot that’s too thin will cook more quickly than the rest of your sheet and end up crispy. You can help soften crispy edges by stacking the lefse right off the grill about 12 high, making sure to keep the sheets between lefse cozies or towels. This will cause a steam effect and soften things up.