The 22-year old returned to North America's domestic league last month after leaving Real Salt Lake for Portuguese giants Benfica about four years ago and it only took him four matches to get back on the scorers list as the Union came from behind to hold New England Revolution to a 4-4 draw at PPL Park.
"It definitely feels good to get my first goal, but I still think that when you are playing at home, you should never give up four goals," Adu said.
"I mean, regardless of who you are playing against. But it is what it is and we had to fight back. And, in the locker room we talked about it.
"We said, 'If we get one goal early enough in the second half we are back in this game' and that's what we did."