The Belgian arrived at Goodison Park in a £6 million move from Olympiakos in the summer, having led the goal charts in Greece, and the Scot is delighted with his early form
The former Olympiakos forward finished as top scorer in the Greek league last season with 20 goals and looked sharp cutting in from the right flank during the clash at Goodison Park.
"He had three or four opportunities that he made himself," Moyes told the club's official website after the match. "I thought he played well.
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"He can play either side for us and he'll play through the middle as well.
"He scored a lot of goals in Greece and I think you could see tonight, every time he got the ball you thought he was going to try and get a goal and try to shoot somehow.
"Hopefully he does that and a few go in for us."
Mirallas could play a more central role in the coming weeks as Nikica Jelavic faces a spell on the sidelines through injury but Moyes also highlighted the impact of Victor Anichebe, who replaced the Croatian international against the Magpies and scored his side's second goal.
"He got the winner that went over the line which they didn't give," added the long-serving coach. "You've got to say, on the night, he had two goals - he did score one and he did score another that wasn't given."