The 22-year-old saw Alex Goode take over responsibility from the tee as Sarries welcomed Clermont to Twickenham, despite recovering from a foot injury in time to start at fly-half.
However, Farrell still ensured his name was on the scoresheet, contributing one of Saracens' six tries as they defeated Clermont 46-6 to book a place in the European Cup final.
And Farrell, who featured in the Lions' series-clinching Test against Australia last summer, now wants Saracens to go one better no matter what his personal contribution
"I've trained fully for two weeks, but I've not done as much kicking," said Farrell. "We made the decision the other day, but Alex kicked very well so ultimately it was fine.
"We'll enjoy this win, it's a big occasion for us, but we want to be used to this, we want to get better, and go on again and show what we can do in the final."