United started strongly, putting the hosts under pressure and pouncing on their mistakes.
We raced into a three-goal lead after 36 minutes, with Ella Toone twice finding the target either side of Leah Galton's close-range effort.
Just before half-time, City managed to pull two back through Vivianne Miedema and Rebecca Knack setting up a tantalising second half.
Toone secured her hat-trick within 10 seconds of the restart and a solid defensive display prevented City from answering back.
FIRST HALF
Seconds into the game, United created our first opportunity after getting a quick start out of the blocks.