Belgium international Hazard, 27, has been at Chelsea since 2012 and won the Premier League under Mourinho in 2014-15 and under Antonio Conte in 2016-17.
Mourinho now manages Manchester United, whom Chelsea face in their next Premier League match on Saturday, 20 October.
“If I’m now asked one coach with whom I want to work again, then I say: ‘Mourinho’,” Hazard told HLN.
“Mourinho’s image of an extremely defensive coach isn’t completely right.”
Hazard said Mourinho was not as “adventurous” as Manchester City counterpart Pep Guardiola but added: “The season in which we became champions, we made many goals and played good games.”
Hazard played under Mourinho for more than two years and was an integral part of Chelsea’s title win in 2014-15, scoring 14 Premier League goals and being voted the Professional Footballers’ Association Players’ Player of the Year.
But Mourinho was sacked in December 2015 with the team 16th in the table, and with Hazard having failed to score in 24 appearances.
“In 12 years I’ve only had one bad season – the last six months under Mourinho – and it was partly my fault,” added Hazard.
“After the title, we asked Mourinho for extra holidays. I came back totally out of shape.
“We didn’t win, we got into a sort of routine – training, training without having fun. It was better for all parties that the collaboration came to an end.”