Mamie Jo Doyle came to Marietta Square backing in 2009 looking for a bakery in which to do an internship. She found a bakery, cut a deal with its owners to buy it at the end of her internship and today is the proud owner of “Miss Mamie’s Cupcakes, Cakes and Such ...” She is also is the winner of “The Cupcake Wars” on The Food Network.

She has a Southern-sounding name that would have fit just fine in Marietta 75 years ago, but she’s actually from Sheboygan, Mich., and is barely 25.

She majored in art at Alma College in that state, and got help from her parents with her bakery purchase. She handles the creative end of it and her brother, a business major, handles the money side. She had visited family in Marietta before moving here. Speaking of family, she has 69 aunts and uncles and 42 cousins, she told members of the Marietta Kiwanis Club recently.

She was one of four bakers selected from among thousands of applicants and a month later, she flew out to L.A. to compete. The show taped last fall and was aired March 25. And yes, she won. The show was taped over a 16-hour day that started at 4 a.m. Four teams competed through three rounds, with one team being eliminated after each round.

The bakers were given 45 minutes to produce a cupcake during the first round, which was judged strictly on appearance.

For the second round, they had 75 minutes in which to make three different-flavored cupcakes that were judged 50-50 on looks and taste. She made one that was éclair-flavored, another that was a margarita cake with a strawberry-jalapeno puree with Key lime butter cream, and a third that was pistachio cake with white chocolate and a rosewater meringue and a sugar rose petal on top.

“I was nervous on second round because I knew we were going a little bit crazy with our flavors, but we made it,” she said. “And I knew if we made it through the second round we’d be OK on the third round, because on the third you have to make 1,000 cupcakes of four different flavors and you have two hours, which most people think is the hardest part, but for me, I feel like I live that every Saturday on Marietta Square.”

She knew she had won but was sworn to secrecy until it aired March 25.

“I wasn’t allowed to tell anybody,” she said. “I had to make up lies. My own grandmother didn’t know that I’d won.”

The Food Network allowed the winning episode to be shown live at The Strand Theatre that night. It was a standing-room-only night.

“It was incredible, especially not being from here,” she said. “It was very humbling, the amount of support I felt from Marietta. I love this place!”

Business is booming these days, and she and her brother now are looking to open a second location somewhere on the coast. Her operation has tripled in size and grown to a dozen employees. In addition to baking cupcakes and cakes and lots of wedding cakes, Mamie’s offers cake-decorating classes and birthday parties. There’s also an internship program.

“So you have anyone interested in that kind of thing, send them our way, because we do fun things there!” she said.

Cobb now is home to a second “Cupcake Wars” winner, Patricia Katopes of Patty Cakes Cupcakes in west Cobb, who took the top prize this month.

“I’m really excited for her,” Ms. Doyle said. “Cobb is going to be known as ‘The Cupcake Land’!” And that sounds just fine to This Ol’ Scribbler!

Bill Kinney is associate editor of The Marietta Daily Journal.