Coming on as a substitute in the 73 minute, the 18-year-old, just 10 minutes later, cut in from the left before firing a shot, which was deflected into the net by Kike Olivas of Valladolid sending the Santiago Bernabeu crowd into delirium.
Until the own-goal, Valladolid had threatened to extend Madrid's winless run.
We have to keep getting three points from three to get back to our place.
Valladolid then was unsafe in the second half and had the best chance to go ahead on the scoreboard, but a pair of shots by Ruben Alcaraz and Toni hit the woodwork and Courtois stopped a potential goal by Toni in a one-on-one opportunity.
From then on, the hosts played with a bit more freedom, with the result consolidated by a late penalty kick from Sergio Ramos as they move up to sixth in the standings, four points leaders Barcelona. We understand how the fans feel.
"We have to lift ourselves up, we understand the fans' frustrations and why they are booing. Today we showed all of those things".
The Brazilian was a protagonist in the Copa del Rey and it seems with Santiago Solari he will have more chances.
The goal was harsh on Valladolid and sucked the life out of the visitors, whose defender Nacho gave away a clumsy penalty kick by falling into Benzema.
"We've got a great squad which has proved that it's capable of winning everything going".
"He's got incredible tactics, he makes his team-mates better and he worked very hard also in defence which I think are fantastic characteristics which say a lot about him".