"Good news: @CorentinTolisso took part in some of today's full training session," Bayern wrote on Twitter, accompanied by a picture of the France international taking part in the session.
World Cup winner Tolisso, 24, took part in part of the group session before resuming individual work.
The 24-year-old, who has 15 caps for his national team, tore the ligaments in his right knee during Bayern's 3-1 win over Bayer Leverkusen in September, and is expected to return to action in March.