The 23-year-old Turris scored 12 goals and 17 assists last season, both career highs. The deal, which is worth an average of $3.5 million per year, will keep Turris in Ottawa through the 2017-18 season.
Turris was acquired by the Senators in a December 2011 trade with the Coyotes that sent defenseman David Rundblad and a second-round draft pick to Phoenix.
In 186 career games, Turris has 31 goals and 44 assists with 70 penalty minutes.
I've been getting frustrated lately, and the only thing keeping me sane was the team winning and other people stepping up and scoring. Then you just kind of let it go and realize you can end the series with one shot, that frustration goes away for a brief moment, and that's what happened.
— Montreal forward Max Pacioretty after scoring the series-winner in Game 4 -- his first career playoff goal -- to eliminate the Lightning and send the Canadiens into the second round