If one offers me with love and devotion a leaf, a flower, fruit, or water, I will accept it.

Bhagavad-gita (9.26)

Lord Krishna

While not strictly considered a monotheistic religion, we have chosen to put Hinduism under this category as Hindus do believe in one Supreme, Omnipotent Godhead. The lesser Gods of Hinduism are exactly that and do not differ greatly from angels and other spiritual beings - godly or fallen - mentioned so commonly in many monotheistic faiths.