There are a few different things that cause this to happen. You should make sure that you check your oven temperature because if the oven is not hot enough, or too hot, the cake may cave in the middle. u003cbr/u003eu003cbr/u003eIf the oven is too hot, it might rise too far and then collapse. If the oven is not hot enough, it may be undercooked in the middle which can also cause the cake to collapse.