The skipper scored twice in the 4-2 victory against Sheffield United to take his tally to 15 for the campaign. His first was a penalty, awarded for a foul on Harry Maguire, and the second, the Reds' third, was a fizzing left-foot drive that took a slight deflection and flew past Wes Foderingham in the visiting goal.
The Portugal international also provided the assist for Rasmus Hojlund's fourth on what turned into an enjoyable night at Old Trafford.
Fernandes has 15 goals for the season, in all competitions, and is the leading scorer for Erik ten Hag's men.