The comedy, co-written by Murphy and Adler, will also be directed by Murphy. The single-camera project is described as "a heartwarming comedy about a blended family of a gay couple and the woman who becomes a surrogate to help them start a family."
Although the pilot has yet to be given the go-ahead, it is expected to, according to Deadline.com.
Rannells' previous Broadway outings include leading roles in Jersey Boys and Hairspray. He received a Tony nomination for his performance in Mormon.