Jol's side had not won in seven games but took the lead through a deflected Steve Sidwell effort and secured a much-needed three points when Hugo Rodallega headed home just nine minutes after Hatem Ben Arfa had levelled for the visitors.
Berbatov should have scored at least once on the night but his close control and first touch drew constant applause from the majority of the fans inside Craven Cottage.
Jol, too, was impressed with the performance from the man he signed from Manchester United in August.
"We had that spell (of poor results) that started against Sunderland with the red card and two big injuries for us," he said. "That was very disappointing for us and then after that we couldn't play Bryan Ruiz - he was out for four weeks for us.
"I was happy that Berbatov, after talking to him, could fill in that role (behind the striker). It was vital, he didn't score so that was disappointing, but on the other hand he linked us up and kept the team together - I was very happy with him."
Berbatov's arrival was hailed as something of a coup for Jol and according to the Dutchman, both he and his squad are aware of how important the former Spurs striker is to Fulham.
"The good thing about my squad is that they realise Berbatov is an outstanding player," he said.
"For me the most important thing is that after losing (Clint) Dempsey - who is making the difference for Spurs now, as well as (Mousa) Dembele plus Danny Murphy and Bryan Ruiz (through injury) I'm very happy that he came to this club because otherwise maybe we could have ended up with a little problem."