Not even the Hamburglar could make off with this bad boy.

McDonald’s CEO Chris Kempczinski has flipped details on the fast-food chain’s months-long teased mega burger, known now as the Big Arch.

It is two patties, three layers of white cheddar melted cheese, a new special, “tangy” sauce, crispy onions, slivered onions, lettuce and pickles on a brioche bun with multi-colored seeds.

The burger intends to be a “quintessential McDonald’s burger with a twist on our iconic, familiar flavors,” he said on an earnings call addressing overpricing and tanking sales Monday.

The Big Arch burger is being tested in three international markets, two of which are already known. Since late June, the burger was available for “lucky” patrons at select Canadian locations in Alberta and Ontario.

A Big Arch meal that includes french fries and a drink rings up at $12.59 in Canada, or $9 stateside, according to media reports.

It is also being tested in Portugal, where one fan begged online that the yellow-boxed burger — it comes unlabeled in Canada, says one TikTokker — be introduced in the US.

McDonald’s will see how it does first “before scaling more broadly internationally.”

Along with introducing a new burger behemoth, McDonald’s is also focusing on cheap eats to lure back customers skittish over inflated prices.

Along with recently implemented $5 meal options, some customers have suggested that the 2016 discontinued, cost-efficient snack wraps will also return soon.

“You’re seeing that the consumer is eating at home more often, you’re seeing more deal-seeking from the consumer,” CEO Kempczinski said, adding that the war in Israel and Gaza has also played a negative role on profits.

“I would point out consumer sentiment in most of our major markets remains low.”

But value offerings are just one piece of the puzzle, and eye-opening goodies like the Big Arch are another piece, according to Kempczinski.

“It’s making sure that as we’re facing certainly a more difficult environment than even what we anticipated last year that we’ve got that value offering,” he said. “But we’re also using the other things that are at our disposal to get this business back to where we know it should be performing.”

Last winter, McDonald’s also started testing a fellow supersized burger — a double Big Mac with four patties that gave a Post reporter a tummy ache despite lovin’ it.