This, after both netted in the Chairboys' comfortable win over York at Adams Park.
Morgan netted two first-half penalties for Wycombe - the first in the third minute after being fouled by Scott Kerr and the second before the break following Jamal Fyfield's barge on Grant.
Grant got on the scoresheet himself with a fine solo effort on the hour mark with defender Dave Winfield completing the 4-0 victory with a header 10 minutes from time.
Wycombe have now won three straight and are unbeaten in five and boss Ainsworth admitted Morgan and Grant would have been a handful for anyone such was their performance.
"The way York came at us, after getting beaten last week, and seeing us on television on Monday, they tried to get us on the counter," said Ainsworth.
"We pre-empted that and thought it might take a while until we got into the game. We didn't think it would take two minutes but players like Dean and Joel are ideal for these situations.
"They can break on the counter away from home and they can break with pace but when teams want to sit in against us they can make things happen.
"They showed that in abundance. It was a flat game, very flat. The early goal killed it a little bit in a funny way but I told the lads they had to grind it out after Monday [when they beat Gillingham].
"I think a few of them were on half tanks starting the game because we gave it everything and I think that to not be fully recovered and put a performance in like that speaks absolute volumes."