The attacking pair, led by Fellaini's eight goals, have scored 13 of the Toffees' 25 Premier League goals so far this campaign and midfielder Osman wants to see some help from the rest of the team.
Osman also touched on the fact that Fellaini has scored five of the clubs last six goals but insists they are not to reliant on the Belgian.
"It's always important to try and spread the goals but, at the same time, you're going to get a period in the season where it's tough and you need your players playing up the pitch to score the goals," he told the club's official website.
"Felli's certainly been doing that for us lately. He's a massive player for us at the minute, that's evident in the way he's playing and the way we play.
"We're not a one-man team, we've got a number of good players this year. I think it's shown in our football this year how we're developing as a team and that we're becoming a better footballing team."