Roethlisberger was later spotted at a piano bar, where TMZ offered Internet footage of the quarterback singing Billy Joel's "Piano Man."
The website said Roethlisberger spent about $1,000 at the bar -- $800 tab, plus $200 tip -- and was nice, fun and "took care of everyone."
On Thursday, Roethlisberger acknowledged going out and said he takes his linemen out every Tuesday night when they go to the Super Bowl.
"It was superstition and tradition," Roethlisberger said. "Tuesday night, I take the linemen out to dinner. I just had an enjoyable night. The tradition for the Super Bowl is, one night and they pick where. It's usually a steak place. They picked barbecue this time."
Roethlisberger was suspended for four games to start the season after the league looked into allegations that he sexually assaulted a woman at a bar in Georgia. No criminal charges were filed, but commissioner Roger Goodell considered it a violation of the league's personal-conduct policy.
Steelers coach Mike Tomlin said he knew about Roethlisberger's evening and had no problem.
"I'm not concerned one iota," Tomlin said. "It's normal for guys to eat dinner, believe it or not. During the course of the season, guys go out on Monday, Tuesday, Wednesday. Believe it or not, guys live lives."