After years of making headlines for the wrong reasons, the 20-year-old is at last beginning to fulfil the potential he showed at Manchester United.
Morrison looked fantastic throughout the Young Lions' European Championship qualifier against Lithuania, opening the scoring at Portman Road inside two minutes before adding an exquisite second in the 71st minute.
"I'm very happy with the performance on my second game for the Under-21s," he told West Ham TV after the 5-0 win.
"My performance was good and so was the team performance and we couldn't have hoped for much better.
"No matter what game I'm going into I always get nervous. Sometimes nerves can be a good thing and they certainly were here.
"I've found it great being part of the squad, I've come in and the lads have treated me well and I've got on with everyone really well so it's been good."
Morrison may have downplayed his performance, but his second goal epitomised why Sir Alex Ferguson rated him among the most talented teenagers he had seen at United.
The midfield livewire won possession just inside the opposition's half and continued forward, bursting between two defenders and fooling the goalkeeper with a stepover to slot into the empty net.
"I can't remember it," Morrison said. I've not seen it back yet, to be honest.
"I just thought I might as well drive it in because I drove it in before when I should have got my shot off but it got intercepted.
"I thought I might as well chance this one and try and break through the lines and that's what I did."
It was a goal that showed similar skill, confidence and composure to his effort in West Ham's 3-0 win at Tottenham before the international break.
Sam Allardyce's side return to action against title contenders Manchester City on Saturday - a match Morrison is confident of securing another three points from.
"I'm very excited because obviously I used to play for Manchester United, but I never played against their first team so I'm really looking forward to it," he said.
"Of course we can cause a shock. We're a great team and we should have had a lot of goals this season but for some reason we haven't.
"Against Tottenham we managed to get the goals which have been missing which was pleasing.
"The defence has been solid so if we carry on doing what we're doing we can cause an upset."
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