If the cheesecake is runny, see the above question. If it's just not as firm as a baked cheesecake, that's normal for a no-bake cheesecake. As noted in the recipe card, this cheesecake is a no bake cheesecake and does not have the same consistency as a baked cheesecake. It does not firm up as much as a baked cheesecake. It will firm up enough to cut, but will still be a light and fluffy consistency and at the same time, creamy. It's not meant to have the same consistency as a baked cheesecake.