Mickey Callaway penciled Amed Rosario in at the top of the order Monday night for the 20th time this season.

Expect to see Rosario at the top of the order more often after the shortstop hit the first leadoff homer of his career in an 8-5 win over the Yankees in The Bronx — and it led to the Mets’ biggest power surge of the season.

“I think leading him off, he seems to adapt to that spot in the order and really values laying off pitches and being more patient,’’ Callaway said after Rosario went 2-for-5 in the win. “We’re really trying to quicken up his swing so he can drive the ball to the opposite field.”

The plan worked well Monday, as Rosario took Luis Severino deep into the seats in right in the top of the first.

Rosario also went the other way with a single in the second and swiped a base before lining to right in the fourth and striking out twice.

“He’s always a bundle of energy coming to the ballpark every day, so it’s fun to get him out there with the first at-bat of the game,’’ Callaway said.

Rosario said his approach was simple enough.

“I just wanted to be aggressive and get our team off to a good start and I was able to get a pitch I could handle,” Rosario said of his fifth homer of the season.

It was the first of a season-high five homers hit by the Mets.

Jose Bautista delivered a two-run homer off Severino in the top of the fourth to break a 2-2 tie. Bautista crushed a 3-2 pitch into the right-field seats. Serving as the DH at Yankee Stadium, Bautista entered the at-bat in a 2-for-38 rut, but clearly still enjoys hitting in The Bronx.

The former Blue Jay has terrorized the Yankees for years and with Monday’s blast, Bautista has 37 homers against the Yankees in his career, second-most against any opponent other than Boston (43). And no visiting player has hit more than Bautista’s 19 homers at the current Yankee Stadium.

Todd Frazier followed by leading off the sixth with his 11th homer of the season — and three of them have come against the Yankees. It came on an 0-2 pitch — and after the Yankees closed to within 4-3 with a run in the bottom of the fifth.

Brandon Nimmo and Michael Conforto went back-to-back with one out in the seventh against A.J. Cole to complete the unlikely power surge for a team that had hit just six homers in its previous nine games.

And it all started with Rosario.

“These young guys like Rosario changed his swing a month ago and it’s very good to see,’’ Frazier said. “He’s going to be fun to watch.”