An Ashleigh Weerden double alongside efforts from Molly-Mae Sharpe, Mille Gejl and My Cato helped Crystal Palace see off Sheffield United and secure their place in the fifth round of the Adobe Women's FA Cup.
Sharpe opened the scoring inside six minutes with her first goal of the season - a low drive into the bottom right corner that proved beyond the reach of Bethan Davies.
The fleet-footed Weerden doubled the Eagles' lead after latching onto Annabel Blanchard's through-ball and firing home at the half-hour mark.
Mille Gejl added a third for Palace not long after the restart after capping off a lung-bursting run with a finish into the top right corner of the net before Weerden sealed her brace with a long-range strike after 60 minutes.
My Cato added a fifth ten minutes later with a close-range finish.
Sheffield United enjoyed chances of their own with Jacqui Hand forcing Shae Yañez into action and Maria Ferrugia narrowly firing her free-kick over the bar to end the first half.
The visitors were able to pull one back with 15 minutes left on the clock when Alyssa Aherne registered her first goal for Sheffield United with an effort from outside of the box.
But that would be as good as it got for the Blades as Olivia Page's unfortunate own-goal ensured Palace soar into the next round, where they will face Newcastle United.
