Keshi Anderson netted a hat-trick as Crystal Palace's development side got back to winning ways with a comprehensive victory at Oakwell.
The Eagles striker took his tally to six in five under-21 games this term, with Jake Gray adding another to help the under-21s win their first game in three outings.
It took just 30 seconds for Anderson to get the first of his treble when he sprinted onto a long pass from midfield and his shot proved too powerful for Jack Walton in the Tykes' goal.
Gary Issott's men enjoyed the better of the contest throughout and could have doubled their lead on 36 minutes when Connor Dymond nearly continued his fine goalscoring start to the campaign but hammered the ball off the crossbar from 20 yards out.
Their advantage was a precarious one though and David Gregory had to be at his best five minutes before half-time when he pulled off a smart stop to deny Simeon Jackson from 12 yards as the striker aimed for the top corner.
But three minutes after the restart the Eagles moved into a commanding position when Gray netted their second after some neat play around the box allowed the winger to coolly slot the ball past Walton, and two minutes after that Anderson was celebrating once again when he again latched onto a ball over the top of the Barnsley backline to fire in his second of the afternoon.
Palace's pressure was relentless and Walton was forced to make some great stops during the second half, but there was nothing he could do to prevent Anderson completing his hat-trick on 76 minutes when he scored from close range to wrap up a convincing victory in Yorkshire.
Reds: Walton, Bree, Templeton, Digby, Scott, Drennan, Kneeshaw, Maris, White, Jackson, Williams (Chippendale 61) Subs not used: Cowgill, Murphy, Gooda, Alton.
Crystal Palace: Gregory, Wynter, Fryers (Allassani 76), Hoare (Breimyr 66), McCarthy (Forte 76), Croll, Bissaka, Dymond, Anderson, Gray, Kaikai. Subs not used: Perntreou, Akiotu.