John Carew (twice) and Martin Laursen were on target and Villa boss Martin O'Neill said: "If you had asked me whether I thought Ashley would have played for England by this time, then I would not have been sure about that.
"But if you are asking me whether I thought he would have made an impact, then the answer is yes.
"He was a young kid who had been at Watford all his life and took a bit of time getting used to the surrounds here.
"But he has taken things by storm. He has been fantastic. He can go 60 yards at pace, beat players at the edge of the box and has the ability to deliver from the open play of free-kicks.
"But he also works hard. The way in which he tracks back is brilliant."
Carew and Laursen both took advantage of Young's accuracy at set-pieces and 20 of Villa's 40 goals have come from either a corner or a free-kick this season.
O'Neill said: "If you have got someone who can deliver a ball like Ashley, then I think I could score!
"But you still have to have people who have the desire to get on the end of his balls into the box and we have that.
"The delivery for the first goal was inviting someone to get in there and John Carew did that."