The 30-year-old's animated celebrations both after the goal and at the final whistle exemplified the emotion inside Goodison Park.
He told evertonfc.com: "What can I say, the past is the past. Now I'm back at Everton and you give everything for the club you play for. That's what I do and I was just lucky to get a goal.
"To score against your former club, it meant a lot to me and to the supporters. The timing was perfect. To score in the last minute, it was a special goal.
"The last [header] I scored was for Ajax in 2001 - my first goal in Europe. Today was only my second one so I'm quite pleased with it."