Wilshere was hailed as one of the best players of his generation when he broke in to the Arsenal squad two years ago, but his career has stalled due to an ankle injury he suffered prior to last season.
The injury, sustained against New York Red Bulls in July 2011, was originally thought to be minor, but he encountered complications in his rehabilitation and then suffered a knee problem that required surgery last April.
The latest problem kept the 20-year-old out for the whole of last season, but he looks set to feature for the Londoners this term after making a low-key return in the Gunners' 1-0 defeat on Monday afternoon.
Wilshere looked lively throughout the match, with a beautiful reverse pass to set up a chance for Nico Yennaris serving as a reminder of the midfielder's talent and vision.
Wilshere then looked to pick out Nigel Neita with a clever through-ball soon after, but his pass was just too strong.
The midfielder caused a slight worry when he required treatment four minutes into the second half, but he was soon back on his feet.
Wilshere's game came to an end in the 63rd minute when he was replaced by Kristoffer Olsson.
In another piece of encouraging news for Gunners boss Arsene Wenger, Emmanuel Frimpong played 70 minutes of the match at the Hawthorns.
Frimpong, 20, suffered a knee injury while on loan at Wolves in February.
The promising Ghanaian made an 18-minute substitute appearance in the 6-1 win over Coventry last week and Wenger hopes to have him and Wilshere back in contention for the first team soon.