Abdul, who shares judging duties on Fox's hit talent show with Cowell and Randy Jackson, has signed a deal to remain for another three years, the network announced Wednesday.
She and Cowell are known for their bickering on the program, which is drawing bigger audiences than ever in its fifth edition. While Cowell often slams contestants, Abdul takes a gentler approach in her comments.
The contestants "truly inspire and amaze me each week," Abdul said in a statement. "Of course, I also look forward to putting Simon in his place for years to come."
Cowell and Fox reached a deal in November that will keep the British record executive and TV producer on the show for at least five more seasons.
Abdul is a singer and a movie, TV and stage choreographer who has worked with Janet Jackson, George Michael and Prince.
"American Idol" is paring the finalists down to the winner, who will be announced on the May 24 finale. The field was reduced to nine after another contestant was voted off Wednesday.