Everton have now hit the back of the net 14 times from their four matches in 2020/21 following their success by the same scoreline against West Brom on Saturday.
“[The performance] shows the confidence and the quality we have, and the strength in depth," said Iwobi. “We were able to rotate the team and got a performance so it shows we have a good team for the season.
“They changed their formation and became more attacking [after the break] but we were able to withstand it and go to the next round. We're targeting every competition. We now move on to the next round and hopefully we can beat West Ham as well."
The Nigeria international admits he is hoping to give boss Carlo Ancelotti a welcome headache for the trip to Selhurst Park.
“It's good experience for me to build fitness and I'm ready for all competitions so it's good of the manager to give me this opportunity," added Iwobi.
“It's always good to score but the main thing is the team goes through to the next round. I'm glad I was able to help.
“Everyone wants to play and I'm trying my best to play in all competitions – hopefully I can give the manager a headache and play as much as I can!"