The ex-Liverpool striker seemed pleased with the striker's display against Crystal Palace from the bench.
Benteke won the penalty after a Damien Delaney's challenge brought him to ground deep into stoppage time as the ten-man Reds came from behind to win the game. The Belgian took the responsibility from the spot, and dispatched the penalty to give Liverpool all three points.
It was Benteke's first goal for the club since December, and it has been a difficult time of things as he has missed chances, and at times looked as if he wasn't really fitting into the side.
Aldridge wrote in his Liverpool Echo column: "The way Benteke wanted to get up and take the penalty so cooly was a good sign I think - it’s a pity he wasn’t available to take one at Wembley.
"I think there are signs that some of his confidence is coming back which is great because he’s a goalscorer and we know he’s a good player.
"The penalty was absolutely brilliant. He knows it’s the last kick of the game and he was ice-cold. It’s a brilliant, brilliant penalty.
"What he’s got to do is work harder to close defenders down - defend from the front.
"I had to do it, Rushy had to do it, Robbie did it, Roger Hunt did it before us.
"If he can get that right he can still have a future at Liverpool."
There's a list of great Liverpool strikers that Aldridge includes in there - suggesting that they have all had their moments of difficulty. Benteke will hope that his performance will be the start of a good run of form for him that can help propel the club up the Premier League table, and possibly into the latter stages of the Europa League.
There have been times when the striker has lacked confidence in front of goal this season - notably when he's missed a few one-on-one's. The FA Cup tie against West Ham proved to be a costly game on that front.
Certainly, it was hard to fault his attitude when he came off the bench, and he could've easily sulked given the lack of game time he has had from the start in recent months. Instead he seems to have kept his head down and tried to work hard in order to rediscover his scoring touch.