Two goals from Levi Lumeka and another from Freddie Ladapo sealed the victory for Richard Shaw's side.
Watch the highlights of our Development League match on Palace TV
Palace: Tupper, Wan Bissaka, Brown, Phillips, Woods, Tavares, Lokilo (Kirby 85), Flangan, Ladapo (Coker 85), Mutch, Lumeka. Subs not used: Funnell, Mitchell, Husin.