It was Geyse who opened the scoring, before Leah Galton doubled our lead with a superb strike just before half-time, putting Marc Skinner's side in control.
Grace Clinton's header nestled into the bottom corner just after half-time, completing the scoring on her debut for the club.
Maya Le Tissier led the team out for the first time as United Women's new captain and debuts were also handed to summer signings Dominique Janssen, Elisabeth Terland, Celine Bizet and Simi Awujo on a sunny afternoon in M16.
FIRST HALF
The Reds started the match fast and after four minutes had a penalty shout waved away after Terland had her heels clipped in the box
The first real chance of the encounter came in the sixth minute when Galton made a fantastic run down the left and her cross was palmed onto the crossbar by Kinga Szemik.