There are a few easy ways to hide or fix a cracked cheesecake top, here are my favorites: First, cool it completely and refrigerate it for at least 6-8 hours. Only when you have a COLD cheesecake on your hands, you can start fixing the cracks. This technique will work on small to medium cracks. If the crack is too deep, imagine splitting the cheesecake in half. I would recommend using this method to fix the crack as much as possible, and after that, continue by adding some topping to it. You will need: 1) a small offset spatula 2) hot water 3) a kitchen towel. Now into fixing it: dip the spatula into hot water (or you can use your fingers, wet them in hot water first) and gently use it to push and press down in the area of the crack and spread to fill in the crack until the top is smooth. Clean the spatula with the towel as needed. In the end, clean the offset spatula with the kitchen towel again, and dip it again into warm water and smooth the top of the cheesecake until you are happy with how the crack has been covered. Do NOT rush through this process. Another option is to add a thin layer of sour cream topping if the cracks are small. Or you can add a layer of whipped cream topping and garnish the cheesecake with fresh fruits.