"It's great to be back home, and I am delighted to be at a club that I love to pieces," said Quashie, who has signed until the end of the season.
"I had a good time when I was here before, and the fans were very good to me. I'm a fan of the club myself so I know what they demand.
"There are some excellent players here and it is nice to come back and be a part of it.
"We've got a chance to get into the play-offs, and if we can do that and then get into the Premier League, the whole place will just take off."
Coca Cola Ch'ship Promotion 09/10 Win Outright: QPR 9/1