The former England international missed three months earlier in the season through injury and has been striving to tap into his best form.
But his display in last week's 3-0 win over Liverpool drew the plaudits from his manager, who expects the midfielder to play a key role in the team's quest for trophies.
"Last Sunday to me was a great sign for me in terms of the confidence of the team, the composure they showed in the game, I thought it was really top class and what was most rewarding for me in the game was the form of Paul Scholes," said Ferguson on Sky Sports News.
"After three-and-a-half months he was taking his time to get back to the real Paul Scholes form. Last Sunday to me he was head and shoulders above everyone on the pitch. I thought he was magnificent.
"That gives us great confidence for the next few weeks with Scholes' form."