Marc Skinner's team are set to face Tottenham Hotspur at Wembley on Sunday (14:30 BST) in our second successive FA Cup final.
Unfortunately, last year, the Reds were edged out by Chelsea, losing 1-0, but after eliminating the Blues in the semi-final of the competition this season, Mannion is determined to ensure United's is the next name engraved on the trophy.
"What I am most looking forward to is being at Wembley, in front of our supporters, and trying to right the wrongs of last year," she said.
"Last year, we got so close, got to the final and got beaten against Chelsea.