"It was great for me and I really enjoyed the game," Heaton told Manchester United Radio.
"I've been involved in a few squads but I've always been watching from the bench or in the stands. This time I finally got on."
A half-time substitute, Heaton kept a clean sheet and made one particularly impressive stop.
"I was happy with my performance," he admitted before humbly downplaying his performance. "That save was okay but, to be honest, I think there would have been a few questions asked had it gone in. Maybe it looked a bit better than it actually was."