The Red Devils secured a 5-0 victory over Leipzig, with Rashford coming off the bench to score a hat-trick.
And the Englishman was delighted with United's attacking prowess.
"I think the manager wanted me to up the tempo," said Rashford. "That for us means going forward. There was definitely spaces there. We got Bruno and Paul on the ball. We looked dangerous throughout and that we could score every time we went forward.
"It was a real team performance. The ones who started did well and the substitutes did well too. We can't ask for much more than that in terms of the attitude and the intent to go and kill the game off. It worked in our favour."