The recipe will probably start to wilt, at the very least If at all possible pack the Chocolate Lasagna in an insulated bag or container along with an ice pack and store it in a shady spot until dessert timeThat Chocolate Lasagna dessert looks deliciousIf your friendly with the host or hostess you can also ask if they can store it in their fridge or they just may have an ice chest in which to store drinks and they might let you store the Chocolate Lasagna in the ice chestDo place the Chocolate Lasagna in a box wrapped in a layer or two of aluminum foil then in a couple of plastic bags so no moisture can get on your dessert from the ice chest.