Jenas was a surprise starter, making just his second appearance of the season following a summer that saw him repeatedly linked with a move away from White Hart Lane.
The 27-year-old more than justified his recall in place of the injured Luka Modric in what was the 50th European match of his career.
Indeed, Jenas produced one of the passes of the season to help set up Spurs' second goal, volleying a defensive clearance out to Rafael van der Vaart on the left and giving the Dutchman all the time he needed to cross for Peter Crouch to head home.
"I knew where Rafa was, the ball was coming down to me and it was just an instinct," Jenas said. "I saw it, I hit it, and - thankfully - it worked out well for us."