The woman faced charges of harassment at Stockholm District Court for attacking the Sweden Democrat leader at a book signing in Stockholm last November. She was found guilty, fined, and in conjunction with other outstanding crimes sentenced to spend two months behind bars.
She did not deny the attack, but downplayed its significance.
"A bit of cream doesn't really cause a lot of damage," she told the court.
"It was a violation of me as a person and to some degree of me as a politician," he explained as he gave evidence over the phone during the trial.
He also said that his attacker had looked like a "nice lady" when she approached him at the event, before she called him a "fascist shit" and launched the cake at him.
In an interview with the Expressen newspaper, the 60-year-old said she had attacked Åkesson because he was a fascist.