Elanga put the Reds ahead on 13 minutes with a bullet header, before Nelson Semedo drew Wolves level.
United responded well and were given the chance to retake the lead when Mike Dean pointed to the spot after consulting the pitchside monitor when Donny van de Beek was tripped by Romain Saiss. Juan Mata made no mistake and fired us in front.
Wolves had some decent possession in the second half, but the Reds held firm and there were also first-team debuts for Hannibal and Will Fish late on.
Watch highlights from the victory above and see reaction from Ole, Mata and Elanga below.