The Toffees are still chasing European qualification through their Premier League standing, but could book an immediate passage into continental competition by securing major silverware.
You have to go back to 1995 to find the last time Everton got their hands on a trophy, with a shock FA Cup success enjoyed over Manchester United.
They are now hoping that the same competition will end their barren spell, with a last eight showdown with Arsenal standing between them and a return to Wembley in the semi-finals.
Mirallas has been left in no doubt as to how important those in and around Goodison Park consider the FA Cup to be, and hopes he can play a part in guiding the Toffees a step closer to hitting a top target.
The Belgium forward said in the Liverpool Echo: "The FA Cup game at Arsenal is the most important game of Everton's season.
"The FA Cup is a great trophy for the team and for the club. It's crucial for us. Having to wait 19 years is a long time and it makes us really determined.
"I can feel the passion within Everton in trying to win the FA Cup. I've spoken to the English players and they've told me how important it is.
"The likes of Leighton Baines and Tony Hibbert, players who are from Liverpool and who are supporters of this club, have made sure of that."
Mirallas hopes a painful experience from 12 months ago will aid Everton's quest in 2014, with the Toffees having let themselves down badly against eventual winners Wigan Athletic after making their way to the same stage last season.
He added: "Last season when we were drawn at home to Wigan at this stage of the season, people were saying it was going to be easy because they were near the bottom of the Premier League, so maybe it's better than we're playing Arsenal. We will be really motivated to play against them.
"Wigan came here and played very well. For me it was the biggest low point since I came to Everton.
"It was my first season at the club and it was really important for me to try and win a trophy. Maybe we can change that this season."