Last season he made 34 appearances, scoring four goals, as Albion secured their highest ever finish in the Premier League.
The 26-year-old has been a constant menace in front of goal since signing from Sheffield Wednesday for £3 million in 2007. In the 2009-10 Championship season he notched 13 times and in his first Premier League season he finished as the club's top scorer with nine goals.
Despite a lower return in the most recent campaign, when the left winger was often deployed in a more central role in midfield, he is pleased with his form.
"I am definitely happy with the way I've played," he told the Sunday Mercury. "I really enjoyed the season playing in the Premier League and being more involved than I was last time under Tony Mowbray.''