The best way to avoid a severely cracked cheesecake is to leave the cheesecake in the oven once it is done baking. After the passion fruit cheesecake is firm with a slight jiggle in the center, turn the oven off and prop the oven door open slightly with a wooden spoon. Leave the cheesecake in the oven like that for a full hour. Once the cheesecake is completely cooled, you can refrigerate for at least 8 hours.