I am fairly certain monotheism and panentheism are not the same.
What specifically makes you say so?
Edit, as I see you are a Shai Muslim: Can you tell me more about what Islam teaches in this regard, then? Is Islam not monotheistic according to the ordinary meaning of the term? Does Islam teach that God and the creation are the same, that only God truly exists?
Islam teaches that God is the active single point of absolute Unity that the universe is emanated from. The universe is illusion (maya), containing falsehood, as it is a temporal material state.
The role of prophets are therefore to give irfan/gnosis, to keep mankind aware of the divine nature of existence and of God.
God is eternal, all-pervading and formless (not like anything in the universe and not a deity) but likened to an infinite light.
It is the microcosm and the macrocosm (outer and inner) but is
not the universe itself - as it is transcendent and (again) emanated this universe (which has existed before).
Everything comes from and returns back to God (a key, reoccurring message in the Qur'an), but ourselves are
not "God" itself, well not in the sense Hinduism's atman identifying itself with the brahman.
Because of God's absoluteness, things like speech are irrelevant to it's being. The metaphysical role of Angels and Theophanies
(which are never God itself manifesting because that would contradict God's perfect Unity) are the bridge between us and God, in the sense that the Divine Will emanates the Logos, which manifests as revelation (to the aforementioned prophets).
Taken further, in respect to that, the universe itself (as an emanation) could be in some sense be also seen as Theophany
(which would connect in a way to the Brahman+Atman realization, both of humans as much as space itself) but the distinguishing quality of God's active nature and Divine Will manifestation upon it's emanation, disqualifies any notion on Pantheism.