Given panentheism, when trying to offer a plausible solution to the problem of evil, what is the most promising way forward? In this article, I argue that a panentheist who wants to answer the problem of evil by using the “only way” argument should embrace the metaphysics of process theism. In other words, she ought to be a process-panentheist. Process theism is a version of panentheism, while panentheism generally need not to imply process theism. I shall use the terms “process-panentheist” (...) and “non-process-panentheist” to differentiate adherents of these two forms of panentheism. I examine the “only way” argument as a possible theodicy for panentheists and conclude that it is only a convincing theodicy for the panentheist if (i) she is a process-panentheist, or (ii) she thinks this is the best possible world. If she is a non-process-panentheist or does not think this is the best possible world, the “only way” approach fails to be a coherent theodicy. (shrink)