Morgan, 46, participated in several sketches, including one about Family Feud and another about action star Jackie Chan's current whereabouts. He also reprised his "SNL" roles as nature host Brian Fellow and Astronaut Jones.
The comedian was injured in a crash involving a Walmart truck on the New Jersey Turnpike that killed James McNair, a comedian who was riding in a limo bus with Morgan. Earlier this year, Walmart settled a civil lawsuit with Morgan and a wrongful death claim with the family of McNair.
Since recovering from his injuries, Morgan performed stand-up at the Comedy Cellar in New York City earlier this month. Before that, he made an appearance at the 2015 Emmy Awards and thanked his doctors and family.
"It's been a long road back,” he said at the time. “I suffered a traumatic brain injury that put me in a coma for eight days ... [when I woke up] I was just ecstatic to learn I wasn't the one who messed up."