Recently I came to know from one of my friend that srIvidyA upAsanA is also done in Vedanta. While I am aware that srIvidyA is Tantrik upAsanA. I was unaware of Vedantic one. Also as far as I know, srIvidyA upAsanA is fruitful when done by both i.e. husband and wife. So how does Vedanta which promotes Sanyasism, do upAsanA of srIvidyA ?
In the worship of Sri-Vidya, there are three ways(Matas)-- Samaya-mata, Kaula-mata and Mishra-mata.
In the commentary of the Saundaryalahari (sloka 31), Lakshmidhara writes
The graceful God Pasupati has recommended different Tantras for the four main and mixed varnas. These Tantras are NOT for the brahmins following the Vedas.For the followers of the Vedas,Lord Pasupati has composed 'Suva-Aagama-Tantra-panchaka'. Vasishtha,Sanaka,Suka, Sananda and Sanatkumar--these five munis have followed this path known as the 'Samaya-aachaara'.
Sri Panchanana Tarkaratna writes in this regard
Samayachara involves only Manasa-upaasana or Internal Worship.There is no provision for external worship.
So the Samayacharis do not have any purascharana, japa, homa or external pujavidhi.
There is no restriction on the Kaulaachari-s also.Lakshmidhara opines that yogis who concentrate on the sushumna are the real kaulas. However, some samayaacharies do not accept the Kaulaachaara as a path to be followed by the Vedic brahmins.
So to conclude, the brahmacharins and sannyasins are allowed to do Sri-Vidya sadhana, but the path is not purely a Vedantic one., even though we get mention of the 'Kaula-Upanishad' and 'Bhavana-Upanishad'.
According to some views, Sri Adi Shankaracharya Himself did practise Sri Vidya Upasana by the way.
Reference: Sastramulak Bharatiya Shaktisadhana, Upendrakumar Das,RMIC, Vol.1, chapter 12.