My kids will eat them right off the pan after it has cooled. You can pre-cut in advance if you need to save time or cook them completely in advance. They store well in the fridge and make great leftovers. Stores do carry the pre-cut versions and that is certainly an option. Those slices will be thinner and there will be more loose leaves. My children really prefer to pick up a piece for bite over the crispy leaves, so I tend to think it's worth to cut them myself. Pairs great with the sweetness of the roasted sweet potatoes.