The safest way to thaw cheesecake is to leave it in the refrigerator overnight. Yep, that's right, just stick it in the fridge and let it chill (get it?) for about 8-12 hours. This way, you'll avoid any bacterial growth and ensure your cheesecake is still safe to eat.
Now, if you're in a hurry, you can try thawing it in cold water. Just make sure the cheesecake is in a leak-proof bag and submerged in cold water. It's like giving your cheesecake a cold shower – it'll wake it right up!
But don't, I repeat, do not try to thaw your cheesecake in the microwave. That's just a recipe for disaster... or a cheesecake explosion. Trust me, you don't want that mess on your hands.
How Long To Defrost Cheesecake – ForFreezing.com