I'll be honest, these sliders taste the best when fresh! Once cooked, the sweet potato won't remain as crispy and the jackfruit will cool and start to harden. I suggest only making as much as needed but if you do happen to have leftovers, store the sweet potato in an airtight container and the jackfruit in a separate container. When ready to enjoy again, roast the sweet potato in the oven similarly and reheat the jackfruit in your pan.