Aquilani featured for the Reds reserves in the 2-0 victory over the Sunderland reserves.
Aquilani joined Liverpool from Roma in the summer, just after undergoing ankle surgery and is still some way from full fitness.
He told Sky Sports News: “It was a good day for me because I have not played for six or seven months.
“I have to do more good work with the medical staff.
“I am happy with 15 minutes and it is important for my confidence.”
He added on the club’s official website: “Of course, I cannot wait to make my debut for the first-team now.
“Like every other player, I want to be playing, but the important thing for me now is to keep improving my fitness.
“I don’t want to stop now – I want to carry on working hard and improving for a long time.
“I have signed for Liverpool for five years and I want to play here for at least five years.”
