Voix Du Reve beat stablemate Real Steel to provide trainer Willie Mullins with a one-two and a second consecutive Ryanair Gold Cup at Fairyhouse.
Cheltenham Gold Cup hero Al Boum Photo handed Mullins his first victory in the race last year, and sterling performances from his two representatives meant the trainer won again with the minimum of fuss.
Voix Du Reve was always prominent alongside early leader Mengli Khan and took command of the Grade 1 shortly before the home turn.
Real Steel mounted a challenge between the final two fences but was unable to stop the mount of Ruby Walsh, who powered home to win by five and a half lengths.
The seven-year-old has been cut to 7-1 (from 10) for the Ryanair Novice Chase at the Punchestown festival next month as a result of the success.
Winter Escape finished a distant third, 25 lengths behind the first two, while Mengli Khan was last of the four to complete following the fall of Cubomania.
The victory was Walsh's first in the contest since 2002, when he guided Big-And-Bold to victory.