Phelan took charge of the team in Sir Alex Ferguson's absence, and was delighted with Bebe's contribution.
"The scoreline gave us the opportunity to give Bebe a little look at what Manchester United's all about. I thought he responded very well," Phelan told MUTV.
"There were fleeting moments of pace and power, and he got a little bit excited now and again. But it's important that players like him get these opportunities."