While Christian-Muslim dialogue is well-worn, some crucial areas of reflection are underrepresented. Questions of textual transmission, historical analysis, and comparison between the respective religion’s soteriological systems are often rehearsed in Christian-Muslim debate. The world of Christian apologetics is also no stranger to considerations of trinitarianism, but far too often, the Christian apologetic response to Islam’s charge of tritheism is inadequate. Seldom will one find a Christian apologetic defense of trinitarianism in Christian-Muslim debate that does not depend on an implicit or explicit social trinitarian model, which both falls short of offering a robust rebuttal to Islam’s challenges and also fails to sufficiently criticize Islam’s own shortcomings in theology proper. This presentation seeks to advance the Christian-Muslim dialogue by bringing a classical, Nicene presentation of trinitarianism into contact with the Islamic doctrine of Tawheed. Specifically, this presentation will show that the Nicene doctrine of the Trinity—with its central emphases on divine simplicity and eternal generation—not only meets the challenges to monotheism posed by Islam, but also that a classical Christian understanding of trinitarian simplicity offers a better account of divine simplicity than the Islamic doctrine of Tawheed.