The Spanish winger took advantage of a rare start, while Eder Militao scored a thumping header to lift Real Madrid past Celta Vigo, with an easy 2-0 win.
Asensio, handed a spot in the XI for the 11th time this season, was at his best, firing Real Madrid into a 1-0 lead shortly before half-time with a composed finish. His efforts will help his case to feature against Manchester City in the upcoming Champions League semi-final.
Madrid doubled their advantage after the break, with Militao soaring to meet Asensio's corner with a header into the bottom corner.
This was a relatively meaningless game for Madrid in terms of domestic ambitions; Barcelona have La Liga wrapped up with eight games remaining. Still, Los Blancos put in a professional performance, one that suggests they can to head into the Champions League semi-final on May 9 with clear concentration and incisive play.
GOAL rates Real Madrid's players from the Santiago Bernabeu...