The top scorer for Warren Joyce's team took his tally to 16 for the domestic season to fuel a remarkable comeback from three goals down against the Magpies.
"It's always nice to get on the scoresheet but the main objective was getting the win which meant we won the league," he told MUTV.
"That was the main aim going into the game and we managed to do that so it was good. The defence played quite a high line at Newcastle so I was always looking to get through and, in the end, I should've scored six but I'll take four as I'm happy with that.
"We usually play 4-3-3 so, most of the time, I've been on my own up front and it's been quite tough so when Ritchie [De Laet] came up, it helped. He's a big, physical presence and his pace helped me get a bit more time and he assisted me as well so it was good."
Keane has naturally been pleased with his overall campaign and is looking forward to Thursday's encounter with Liverpool and the Reserves Play-Off final with Aston Villa.
"It's been pleasing," he said. "I've had a good run in the team and scored quite a lot of goals, which I've been pleased with.
"Overall, the team have done well and the team spirit has been good, we've all got on well. In Dallas [for the Dallas Cup], we all got on well together and there were quite a lot of games over a short space of time. It was good for our fitness and it helps us to come back and push on for the last few games and get some silverware at the end of the season.