A Pennsylvania mother will spend the rest of her life in prison for the barbaric deaths of her two young children — who were found hanging by a dog leash in the basement of their home.

Lisa Snyder, 41, was convicted last month of two counts of first-degree murder in the September 2019 deaths of Brinley, 4, and Conner, 8.

The brother and sister were both found hanged with the same dog leash in the basement of their Albany Township home, about 60 miles northwest of Philadelphia. Although the kids were taken to the hospital, they died three days later after being taken off life support.

Snyder had no visible reaction during Thursday’s hearing, in which she received two life sentences without the possibility of parole.

Meanwhile, President Judge Theresa Johnson called the crime the most violent murder she had ever seen during her time on the bench and slammed Snyder for showing no remorse, AP reports.

Johnson also imposed an additional 8.5 to 17 years on child endangerment and evidence-tampering convictions.

Snyder’s surviving son, Owen, 22, called her a “monster” and said he no longer considered her his mother while testifying against her in September.

“I just don’t see her as my mother anymore,” he said as his mother sobbed, the Mainline Times & Suburban reported at the time.

The eldest son also denied his mother’s claims that his younger brother Conner was depressed because he was being bullied at school, which drove him to kill himself and his sister, Brinley.

“He was a happy-go-lucky kid,” Owen said. “He always wanted to be doing something. He was always playing with his little sister.”

Authorities also found no evidence to support Snyder’s claim, and an occupational therapist testified Conner wasn’t physically capable of causing those kinds of injuries to himself or his sister.

Police also cited evidence from Snyder’s phone — which included incriminating Google searches such as “how to hang yourself” — as well as her recent watch history, which included the true crime show “Almost Got Away With It” mere days before her children were hanged.

A coroner said both children were killed by hanging and ruled the deaths homicides.

The defense unsuccessfully sought an acquittal, saying the case hinged upon little more than “guesswork.”

Snyder’s legal team wanted to plead no contest but mentally ill to third-degree murder, but the judge rejected the plea agreement.

With Post wires.