Brendan Gallagher added a goal and one assist, while Tomas Plekanec also lit the lamp for the Canadiens, who can advance to the conference semifinals with another positive decision in Tuesday's Game 4 on home ice.
P.K. Subban contributed a pair of helpers for Montreal, which hasn't played in the second round since reaching the Eastern finals in 2010.
Anders Lindback made 28 saves in the setback.
2014: NFL Cheerleaders [PHOTOS]
Michael Sam cut from the Dallas Cowboys