Toon winger Gabriel Obertan bagged a trio of breakaway goals as Palace's development side went down 4-0 to a strong Newcastle United side inside the vast surroundings of St James' Park.
The former Manchester United attacker took only three minutes to give his side the lead, and notched twice more in the second half to complete his treble as a young Palace side were taught a lesson in finishing by the livewire forward.
The Magpies went into the game unbeaten in their last nine games at this level and named first-team fringe stars Obertan, James Tavernier, Gael Bigirimana and Romain Amalfitano in their starting line-up, and just three minutes passed before they made their superiority count. A neat pass from the outside of Amalfitano's boot played in Obertan, and the Frenchman used his electric pace to break away from the Eagles defence and tuck the ball past David Gregory.
After falling behind so early Palace did well to keep their heads up and created a number of chances soon after. Ryan Innis sent a looping header narrowly over from Hiram Boateng's free-kick, Ibra Sekajja burst towards goal with only a superb block from Lubo Satka preventing him from getting on the scoresheet and Boateng dragged a low shot narrowly wide.
Just as the Eagles looked to be gaining a foothold back into the game, the Magpies took the wind out of their sails by producing a second goal against the run of play. Jamaican teenager Rolando Aarons, who scored against the Eagles in the reverse fixture at Selhurst, gave Gregory no chance with a fine curling effort to double the lead.
Once again Palace nearly responded when Sullay Kaikai turned and shot inside the box but Toon keeper Jack Alnwick saved well low to his right, then then Sekajja cut inside before firing off target as the Eagles found themselves harshly two goals down at the interval.
However it was deja-vu for Palace as they saw the game slip away from them once again three minutes after the restart. Skipper for the night Obertan once again used his speed to get one-on-one with Gregory and found the net despite the keeper getting something onto his effort.
After netting twice in Monday's win against Reading, it looked as though Kwesi Appiah would pull a goal back for his side when he robbed Tavernier to go clean through but surprisingly side-footed wide with only Alnwick to beat.
Amalfitano and Alex Wynter saw shots just miss the target before Obertan completed his hat-trick in similar fashion to his other two strikes as he outpaced the Palace defence before finding the bottom corner of the goal to make it 4-0.
Having struggled for the first-team this term, the Frenchman nearly added a fourth but Gregory did well to deny him inside the box before Palace were denied a late consolation as Alnwick kept out Boateng's curler as Gary Issot's side left the north-east empty handed.
Newcastle: Alnwick, Mbabu (Nicholson 76), Desmond, Tavernier, Satka, Aarons (Quinn 65), Bigirimana, Miele, Gilliead, Obertan (c), Amalfitano. Subs not used: Mitchell, Gillesphey, Logan.
Palace: Gregory, Akuruka, Parsons, Dymond, Wynter (c), Inniss, Sekajja, Boateng, Appiah (Henry-Francis 78), Dindane (Daniel 78), Kaikai (Marriot 65). Subs not used: King, Taylor.