Former All-Ireland senior winning captain, Amanda O’Regan, shot 1-7 for the Leesiders, while Caroline Sugrue was player of the match.
Catherine McGourty and Fionnuala Carr fought hard for Down but they could not deny their rampaging opponents.
A sixth minute goal from Nicola Braniff helped Down to a 1-4 to 0-6 at half-time.
Brid McGourty and O’Regan exchanged scores early in the second half before Jessica Kavanagh saved Catherine McGourty’s penalty.
McGourty made up for that with a goal to put Michael McCullough’s side clear.
O’Regan brought the teams level with a goal from a 25th minute free that dropped just under the crossbar and late points from O’Regan, Laura Treacy and Sugrue sealed the verdict.
Scorers for Cork: A O’Regan (1-7, 1-6fs), C Sugrue (0-3), L Treacy, S O’Neill (0-1 each).
Scorers for Down: C McGourty (1-3), N Braniff (1-0), N Mallon (0-2), B McGourty (0-1).
CORK: J Kavanagh, S Buckley, L O’Sullivan, N O’Keeffe, S Harrington, C Foley, S Hayes, L Treacy, H O’Regan, C Sugrue, C Desmond, S O’Neill, J Hennigan, A O’Regan, M Cahalane.
DOWN: M McNally, J Fowler, C McGovern, K Tinnelly, C Rocks, F Carr, E McCormick, A Keown, L McPolin, C McGourty, P Gribben, K McMullan, N Mallon, N Branniff, B McGourty.
Referee: R Kelly (Kildare).