The Bills will enter MetLife Stadium with more confidence than the average visitor, making them an even more dangerous opponent when they face the Giants there Sunday.

Before the Giants were pounded by the Cowboys, 35-17, at AT&T Stadium last week, the Bills rallied from a 16-0 deficit to stun the Jets 17-16 in the Meadowlands.

After three quarters of inefficiency, the Bills began an impressive comeback with a 43-yard field goal followed by touchdown drives of 85 and 80 yards. Using big plays and the big arm of quarterback Josh Allen, Buffalo shredded a Jets defense that had forced four turnovers and looked completely in charge.

“We didn’t have a lot of success in the first half, but we found a way,” said Allen, who was 24-of-37 for 254 yards, one touchdown and two interceptions in his first season opener. He said the Bills’ offense down the stretch consisted of “just getting the ball in our playmakers’ hands and letting them make plays, which is what we did on Sunday.”

It was a game of growth for a young Bills team that returns to the same stadium to play the Giants. If not for the fourth-quarter heroics, the Bills might have been shut out or soundly beaten. There would have been doubts about the potential of the offense and Allen, who begins his first full year as the starter. Instead, it’s the Giants who enter trying to correct what went wrong against Dallas and find a winning formula to avoid another 0-2 start.

The way Allen and the Bills finished against the Jets has gotten the Giants’ attention. Allen showed resilience and determination finishing the first long drive with a 3-yard TD run and the second drive on a 38-yard pass to John Brown.

“He’s helped his team win games, which makes him a winner,” Giants head coach Pat Shurmur said of Allen on Friday. “That’s impressive for him to stay steady. They were down by 16 and he led a 17-point comeback. That’s impressive.”

It should be scary for a Giants defense that gave up 494 total yards against the Cowboys, including 405 yards passing. There are no guarantees the Giants secondary will play any better this week than it did last week without a supporting pass rush.

The Giants would be wise to investigate a trade for Dolphins defensive back Minkah Fitzpatrick if he’s available, but otherwise the Giants are hoping rookies like DeAndre Baker and Corey Ballentine develop quickly.

The Bills are evolving like the Giants, trying to get the most out of their young players and trying to figure out their exact roles. The Bills look to be the more explosive team, especially with Giants wide receiver Sterling Shepard out with a concussion. Allen is in his second season after a spotty rookie year, and the backfield is a mixture of veteran Frank Gore and rookie Devin Singletary.

Don’t sleep on Brown and Singletary. Brown, in his sixth season, had a huge game against the Jets with seven receptions for 123 yards and the touchdown catch. The emergence of Singletary, a third-round pick from Florida Atlantic, prompted the departure of LeSean McCoy. Singletary led the Bills in rushing last week with 70 yards on just four carries and also had five catches for 28 yards.

The Bills also showed they’re capable of making the big play with six plays of 20 yards or more against the Jets, including three in the fourth quarter.

“We’re far from where we need to be, but they played their best when it counted the most,” Bills offensive coordinator Brian Daboll said.

Bills coach Sean McDermott doesn’t want to make much about his team’s chance to beat the Jets and Giants in successive weeks on their home field.

“That’s for you guys to write about,” he said. “We’re just trying to win a game.”

And become monsters of the Meadowlands.