Moyes continues to have faith in the Croatian, who last scored against Cheltenham in the FA Cup on January 7.
"We give him an opportunity to play and score," Moyes said.
"He took one great on his chest in the first half and he was a bit unlucky not to score.
"You can only keep putting him out there. If he scores and gets the goals, he probably wins Everton games.
"He's really important to us and we hope that he's going to come up with the goods between now and the end of the season."