Created in 1991 by Australian philosophy student Richard Manderson. They were Jesus-shaped chocolates filled with raspberry jam so they would “bleed” when bitten.
More info from wikipedia:
When a US newspaper condemned his act of depicting Jesus on a chocolate, Manderson decided in answer to create an actual life-size chocolate Jesus he called Trans-substantiation 2. He did so by filling a plaster mold with fifty-five pounds of melted chocolate. He used chocolate-dipped strings for hair and plastic Easter wrap for a loincloth. Manderson’s work was exhibited in public around Easter in 1994, with Manderson inviting the public to come and eat his chocolate Jesus work after the exhibition.