OTTAWA — This is home for Ryan Spooner, and Saturday night the Bruins winger played homewrecker.

Shifted from center to wing with the return of slotman David Krjeci to the lineup, Spooner scored two of the Bruins’ first three goals to pace a 5-0 thumping of the Senators before a stunned crowd of 17,579 (no small percentage of them “Pals of Spoons’’) at Canadian Tire Centre.

Spooner scored the night’s opening goal in the first period on a power play, then tacked on his second amid a three-goal outburst in the second that sent the Senators reeling for the second time in less than a week against the Black and Gold.

“Awesome, I don’t think I’d scored here in something like 13 games,’’ said Spooner. “I just want to help out.’’

Backed by Tuukka Rask’s 25 saves and 40th career shutout, the Bruins rolled to their 15th win in 20 games (15-3-2) and easily dismissed the club that knocked them out of the first round of the playoffs last spring.

Rask is 10-0-1 in his last 11 starts, allowing only 14 goals in the stretch and compiling a dazzling .953 save percentage. The former Vezina winner, after a rough start to 2017-18, has regained his elite stopper status and has not lost a game in regulation since Nov. 26.

“I think we’re playing as a team, I think that is the biggest thing,’’ said Rask, who made a couple of strong saves early in the first, then shifted into rocking chair mode when the Senators’ spirits caved amid the second-period beatdown.

“We took over the game. Their chances came early. We scored more and we always played the same way. Great to see. Going ahead, that’s great to see because that’s going to reward us in the future.’’

Spooner’s first goal gave the Bruins a 1-0 lead in the first period and his second came amid the three-goal onslaught. After blocking a Ben Harpur shot just inside Boston’s defensive blue line, the speedy Spooner raced through the neutral zone with only Harpur in pursuit and finished with a backhander through the pads of Senators goalie Mike Condon.

“I just tried to get to the net,’’ said Spooner, ever more conscious of using his speed in scoring situations and working hard to abandon the clever swivel move in his skating gait. “Maybe a year ago I might have tried that, but I thought I had a step on him and just tried to get to the net.’’

Noel Acciari, Krejci, and Patrice Bergeron scored the other goals for the Bruins, who closed out the 2017 portion of their playing calendar with an overall mark of 21-10-6. They don’t play again until Tuesday night in Brooklyn against the New York Islanders.

Bergeron’s goal, a tip of a long wrister by Torey Krug (two assists) early in the third period, made the Bruins a perfect 3 for 3 on the man-advantage — after going an anemic 1 for 14 on the advantage in the previous five games. They finished the night 3 for 4 on the PP, their most productive night with the advantage since going 4 for 8 vs the Canucks on Oct. 19.

The Bruins also thumped the Senators, 5-1, on Wednesday night, their first game back after the league’s holiday break. The Senators, 12-17-8, are a weak iteration of the club that whisked the Bruins out of the ’17 Cup playoffs in six games and went seven games with the Penguins in the Eastern Conference final.

After the 1-0 lead in the first, the Bruins made it 2-0 only 3:29 into the second when Acciari connected with an offspeed backhander from the left wing circle after Krug dished him a short feed from the left side. Condon, the ex-Belmont Hill standout, appeared to lose the soft serve as it came through a crowd.

After Spooner’s unassisted goal made it 3-0 at 5:38, the Bruns made it a 2-for-2 night on the power play at 13:39 when the clever Krejci neatly picked up a loose puck off a Charlie McAvoy one-timer and slipped a forehander just inside the base of the left post.

Absent due to injury for the last six games, Krejci was the key to Spooner’s go-ahead goal with 8:13 gone in the first. Twice Krejci hammered Condon with long one-time slappers, the second of which Condon only managed to push out to the right wing circle. Spooner, working the right half-wall on the No. 2 PP unit, quickly cashed in for his second goal of the year.

“I mean, I like to shoot,’’ said Krejci. “I’ve worked hard on my one-timers the last few years and today I had two good passes from Chuckie [McAvoy], and I’m not going to pass up those shots, especially with [David Backes] in front of the net.

The Bruins carried the one-goal lead into the first intermission, boosting their lead time to 193:47 over the last six plus games (vs. 0:00 for their opponents).

Krejci, limited to 18 games prior to the match here, landed a team-high three shots on net in the first period.

“It seems we have the confidence,’’ said Brad Marchand, who remained tied with David Pastrnak for the club goal-scoring lead (15). “We’ve come together in the room like a family and really . . . we aren’t relying on one or two guys. We’re relying on the whole team.’’