Bennett became the club's youngest ever scorer at 16 years and 174 days, beating the previous record set by Lee Holmes in 2003, when he bagged the final goal three minutes from time.
"That was the highlight of the day for me," Clough said. "He could have scored one when he made his debut at Middlesbrough and hit the bar so it was lovely for him to get one today.
"It's good because I think the experienced lads on the bench all understand that although all of them could have come on, it's vital for the younger ones to come on and get experience.
"To be fair, I didn't think it was a 5-0. We took our chances and got goals we don't normally score when the ball is bobbing around in the six yard box which was pleasing.
"The first goal was important because it settled everybody down and we went in at half time with a big boost."
Tranmere boss Ronnie Moore added: "The turning point for me was the first goal. I thought we probably edged the first half so to concede was disappointing for us.
"The basic defending just after half time was poor and really, we gifted them three goals but I think we can take a lot of positives out of the first half.
"I didn't think 5-0 was a reflection on how the game was. The last time we got beat 5-0 we won three league games on the trot."