The Portugal international marked his return to the side with a superbly-taken strike after being played through by Ryan Giggs with a couple of minutes remaining at BayArena.
"It was a great goal and I'm happy," Nani enthused to MUTV. "But the most important thing was the result. We want to continue like that.
"Scoring five goals away from home is not easy against a German team. I think we have to be happy with what we have done tonight and keep up the good work."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball