"a growing penchant" is correct and can be used in written English.
It is used to mean a growing inclination to do something. For example, "He had a growing penchant for trying new foods."
Mr Sharansky, a minister without portfolio in Ariel Sharon's Likud government, has a growing penchant for siding with the hard right.
The neighbours also have a growing penchant for tax amnesties, under which tax-dodging citizens who bring home money salted away abroad (often in Switzerland) will not be prosecuted.
He uses a revolving cast of human, ideogrammatic, geometrical, and animal shapes (rooster, bull, rhino, skull, cross, self-portrait, triangles and pyramids, birds, chimerical sea creatures), and a growing penchant for juxtaposing patterns including the staccato of Aboriginal dot-matrix and the sliding planes of low-polygon Cubism.
You can't have debate without knowledge, and given the growing penchant for overclassification, that's where the press steps in.
TELEVISION networks and channels are becoming increasingly involved in the creation of commercials that appear during their shows, hoping to counter the growing penchant among viewers for zapping or zipping through conventional commercials.
Broadway's growing penchant for self-mockery — as well as the comic hay made of the disaster-prone "Spider-Man: Turn Off the Dark" — may have stolen Mr. Alessandrini's thunder in recent years.
Lamenting the press's growing penchant for trashing public figures and manfully admitting his own part, Mr. Reeves wrote that Mr. Ford "had done a better job than I had predicted or imagined" and added, "You have my respect and thanks, Mr. President".
He indulged himself on several pet topics that were of no apparent help to Mr. Strange, including the president's Electoral College success, his decision to work with congressional Democrats and what he argued was the growing penchant of N.F.L. referees to throw flags for hard hits.
"This partnership with Saavn is in response to this growing penchant for mobile shopping amongst our customers.
The need to reduce risk explains universities' growing penchant for hiring faculty members off the tenure track and using adjuncts for teaching.
What is most intriguing about this growing penchant for gaming is that brands, employers and even governments are using it to encourage and motivate people to act.
