PITTSBURGH — The Boston Bruins reminded Sidney Crosby and the Pittsburgh Penguins that Stanley Cup champions aren’t crowned in October.

Tim Thomas stopped 45 shots and the surging Bruins kept rolling with a 3-1 victory Monday night to improve to 14-0-1 in their last 15 games and pull within a point of the Penguins atop the Eastern Conference.

Gregory Campbell, Benoit Pouliot and Tyler Seguin scored for Boston as the defending champions put the clamps on Pittsburgh stars Sidney Crosby and Evgeni Malkin.

“We don’t know how we’re going to win every night,” said Thomas, unbeaten in his last 10 starts. “We’re going to do it different ways with different guys, but all of us together at the same time. It’s been pretty nice to be a part of this team the last month.”

The Bruins haven’t lost in regulation since Halloween. Given the way they dominated the Penguins for long stretches in a game that felt more appropriate for April than early December, the streak could go on awhile.

Boston had little trouble with the Penguins, holding Crosby scoreless and killing all four of Pittsburgh’s power-play opportunities, including a pair of five-on-three advantages.

“(Thomas) made some good saves,” Crosby said. “We didn’t make it as difficult as we would have liked, but he certainly made some saves when he needed to. Give him credit; he made a couple good ones there, especially on that five-on-three.”

Matt Cooke scored his sixth goal of the season and Marc-Andre Fleury made 24 saves for Pittsburgh, but the Penguins mustered little offense over the game’s first 50 minutes as Boston bolted to a 3-0 lead.

“You hope it’s a habit more than it’s a streak, so we’re trying to build those good habits and there’s no reason why you can’t give your best every night,” Boston Coach Claude Julien said. “So, I think our guys have gotten really good at that and so far it’s been great; it’s gotten us back to where we wanted to be and certainly kind of erases the tough start that we had.”

And then some.

While praising his team’s resilience, Julien pointed to this week’s stretch of three games in four days as a better litmus test for how far the Bruins have come. Boston travels to Winnipeg tonight before hosting Southeast Division-leading Florida on Thursday.

Judging by the way they pushed the Penguins around, the Bruins are more than up to the task.

Unlike Boston, Pittsburgh has been steady all season. The Penguins came in 5-1-1 since Crosby returned from concussion-like symptoms two weeks ago, playing at times like a team ready to win its second Cup in four seasons.

They very well might, but the way the Bruins are playing it’s hard to call the Penguins a Cup favorite.

Boston kept Crosby in check — he finished with five shots in just more than 21 minutes of ice time — and never let Pittsburgh’s high-powered attack get in gear.

The Penguins failed to score on a pair of five-on-threes, including 2 listless minutes with the two-man advantage in the second period.