Hey, Nyiix!
Yes, we do have lots of Sacred Writings! Bahá’u’lláh had penned a very large body of works! The Writings of The Báb, ‘Abdu’l-Bahá, and Shoghi Effendi, and the counsels of the Universal House of Justice are also considered authoritative. For brevity's sake, though, I'll just give you a few:
- The Bayan (The Báb)
- The Kitáb-i-Aqdas (Bahá’u’lláh)
- The Kitáb-i-Iqan (Bahá’u’lláh)
- Epistle to the Son of the Wolf (Bahá’u’lláh)
- The Seven Valleys and Four Valleys (Bahá’u’lláh)
- Paris Talks (‘Abdu’l-Bahá)
- Gleanings from the Writings of Bahá’u’lláh (compiled by Shoghi Effendi)
- God Passes By (Shoghi Effendi)
Not only that, Nyiix, but Bahá’ís recognize the Writings of other religions (the Tanakh, the New Testament, the Qur’an, the Vedas, the Gita, the Sutras, the Zend Avesta, etc.) as being Divinely inspired and thus, infinitely sacred.