To check if your cheesecake is done, gently shake the cheesecake. If the cheesecake looks nearly set and only a small circle in the center jiggles slightly, it is done. (The center will firm up during the cooling time.) Do not use a knife to check doneness. Using a knife to test a cheesecake may create a crack in the top; also this method does not give an accurate test for cheesecakes made with a large amount of sour cream. Cheesecakes made with sour cream should jiggle a little more and will have a larger soft spot in the center.
Learn how to make cheesecake.