Mini cheesecakes are finished baking with the centers are still slightly wobbly (give the pan a slight jiggle to check) with set edges. The cheesecake will continue to set as it cools, so a slightly jiggly center is the ideal time to turn off the oven. If the center is still very jiggly (or even wet), the cheesecake needs to continue baking. If the center is firm, the cheesecake may be over baked.