Butler High School graduate Sarah Kosar is now a playwright living and working in London.

Her new play, “Spaghetti Ocean,” which is set in Butler, has sold out a staged reading set for Friday at the Royal Court Theatre in London.

Kosar, the daughter of John and Phyllis Kosar of Butler, moved to England to study in 2009 while she was a student at Penn State University.

“This was the time I first fell in love with the theater community and people and knew I had to live and work here,” Kosar recalled.

After graduating in 2010 with a bachelor’s degree in theater and film/production, she went back to London to pursue a master’s at Central School of Speech and Drama, “and have been here ever since working professionally as well as writing plays,” she said.

Not much time has elapsed since the first professional full-length production of her play “Hot Dog” debuted in March 2013 at the Last Refuge in London.

“Following this production, the play was published by Playdead Press and taught at Penn State University in the Advanced Playwriting course as well as Women in Theatre, both taught by Dr. Susan Russell (currently Penn State Laureate),” Kosar said.

“It has also been taught as part of Arcadia University’s study abroad program at Royal Holloway University, United Kingdom.”

“Hot Dog” had its American debut at the Thinking Cap Theatre at Nova Southeastern University in Florida in May.

Her other staged productions include the short plays “Pineapple, Ring My Arm, Click, Knuckle” produced at the Old Red Lion in 2013; “Colour” at the Last Refuge in 2013; and “Fox” at the Southwark Playhouse in 2013, plus the radio play “Hashtag” for Roundhouse Radio in 2013.

Her staged readings include “Before You’re Fourteen,” “Brother Husband” and “Phyllis.”

Could she possibly have a favorite among her many writings?

“That’s a really difficult question. I think as a writer, I want to always believe I’m writing the best thing I’ve ever written or else it’s hard to find the impetuous and passion if you don’t believe in it wholeheartedly,” Kosar said.

“As with any discipline, I believe you can only become better by doing that thing over and over again whilst having determination and love for it.”

So, the play she had been working on recently called “Armadillo” about a girl in love with her gun was one of her favorites.

Now it’s “Spaghetti Ocean” looking at food addiction and compulsion in America.

The descriptor for Kosar’s “Spaghetti Ocean” goes like this:

“Rachel has a career, a boyfriend and a life in New York City, until she tweets the wrong thing. Fired from her job, Rachel must move back in with her ambitious mother, Barb, in Butler, Pennsylvania.

“Although Rachel’s promised herself that she’ll never become her Mother, her only option to get back on her feet is to work for Barb’s pasta factory, Ocean Pasta Inc.

“Barb seizes the opportunity in having Rachel back as a way to transform her pasta factory into an ‘authentic’ Italian-American family business. To Barb, being Italian means looking like a family but Rachel doesn’t have the Palumbo family look. As Rachel strives for her Mother’s approval, she eats to transform and become part of the family.

“With the help of Dino, a local restaurateur and self-styled Frank Sinatra impersonator, Rachel sets out on a journey to make it big in her small town.

“But how big is big enough to find the American Dream today?”

In addition to writing, Kosar also works full-time at the creative tech company, VisualDNA, as a talent acquisition officer.

She said she is eagerly anticipating the production of her short play “Ice Cream,” which will be premiering at Southwark Playhouse in London.

“‘Ice Cream’ examines the idea of what it means to die digitally and how we may want/not want to live on online.”