If you want a Baroque piece, you can try one of the Handel suites:
Suite no. 3 in Dm – 23 minutes
Suite no. 4 in Em – 14 minutes
Suite no. 5 in E – 14 minutes
Suite no. 7 in Gm – 23 minutes
Suite no. 8 in Fm – 13 minutes
Suite no. 9 in Gm – 14 minutes
Suite no. 10 in Dm – 15 minutes
Suite no. 11 in Dm – 14 minutes
Suite no. 13 in G – 18 minutes
(The other suites are around 10 minutes or slightly less)
You can also try Scarlatti Sonata K19 (12 minutes), K402 (13 minutes), K460 (11 minutes), K478 (12 minutes).
Times are approximate. In the case of Scarlatti, it is now accepted that many of the sonatas were meant to be played in pairs, and a few in threes. If you do that, then many more sonatas fit your time constraint. Ask again if you decide to do a pair of sonatas, or a set of three.
Best wishes,
Bernhard.