Two cold-hearted con artists swindled a 65-year-old Brooklyn woman out of nearly $30,000, police said on Friday.

One of them, a woman, approached the victim on Nostrand and Church avenues in East Flatbush on May 11 and started to talk about a “charitable’’ donation she wanted to make — but for some unexplained reason could not.

The woman’s accomplice, a man, joined the conversation, and the two swindlers convinced their mark that they needed proof that she could make the donation for them — by showing them her own cash.

They drove to her home nearby, where she gave her two new friends $28,000 that they “blessed.’’

In return, they presented her with a bag they said contained her money plus the “contribution.’’

When she opened it, she found only shredded newspaper pages.

Police were searching for the duo.