A Supreme Court jury has found Rebecca Payne guilty of murdering her husband in the Mallee town of Walpeup in 2020.
Warning: This story contains descriptions of domestic abuse that readers may find distressing.
A jury of 12 took two days to deliberate the matter following a three-week trial in the Mildura Supreme Court.
Payne, 43, had told the court she thought her husband, Noel Payne, would "just go to sleep" after she fed him biscuits spiked with the drug temazepam.
Mr Payne's body was later found inside a freezer in 2020.
Lawyers for the 43-year-old woman asserted her innocence throughout the trial, stating she did not know her husband would die when she drugged him.
The court heard that on the night of the murder, Payne rolled up her husband's body in a carpet in the pair's lounge room and dragged him into a wheelbarrow.
She took his body outside and secured it inside a freezer at the back of the property using duct tape and straps.
His body was found by police in September 2020 in Walpeup, 130 kilometres south of Mildura.
The court heard Mr Payne was violent towards Payne and another live-in sexual partner, who has a sustained brain injury.
Supreme Court Justice Rita Incerti thanked the jurors for their service and said she would hand down a sentence at a later date.
Victorian law requires a unanimous decision for a guilty or not guilty verdict.
"I thank all of you for your assistance in this matter," Justice Incerti said.