The Aston Villa striker will spend the season on loan at Craven Cottage, and opened his account on his debut with a consolation goal in the 3-1 defeat to Arsenal on Saturday
The 13-time England international briefly played under the Dutchman at Tottenham before moving to Sunderland and Aston Villa, before falling out of favour under Paul Lambert last season.
Christian Benteke's emergence at Villa Park left Bent on the fringes of the first team, but Jol has no doubts over the striker's ability after notching against Arsenal and is expecting much more from his latest recruit.
| BENT: LAMBERT ALIENATED ME
|9/4||Darren Bent is 9/4 with BetVictor to be Fulham's top scorer this term
"With other players it’s always a gamble but if you look at his record he scores goals. Even when he’s not playing he scores goals!
"When I was at Tottenham he scored nine and Jermain Defoe got 12 and I can’t even remember Darren playing.
"His record at Aston Villa was at least one in three. If you play him regularly, one in two or one in one-and-a-half games."
Jol will be hoping the 29-year-old can add to his tally when Fulham take on Burton Albion in the Capital One Cup on Tuesday before going after their first league win of the season at Newcastle on Saturday.