A man who stabbed a male nurse 41 times and cut off his penis to keep as a souvenir has pleaded guilty to murder one week into his trial.

Michael Stephen Owen-Darcy, 30, changed his plea in the Supreme Court in Brisbane on Tuesday morning, admitting he intended to kill David John Easton.

During the trial the court had heard Owen-Darcy stabbed Mr Easton 41 times at their shared home at Inala in July 2007.

After the murder, Owen-Darcy also posed the corpse for photographs with props including a pot plant, a pair of nail scissors and bandaids over his eyes with dots drawn on them.

He also cut off the deceased man's penis, wrapped it in cling wrap and put it in a salt bottle to "keep it as a souvenir", the court was told.

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Justice John Byrne has adjourned the hearing, however the charge of murder carries an automatic life sentence in Queensland.

AAP