Donut Bar, with outlets in Fountain Valley and San Diego, calls the 1-pound creation the "Big Poppa Tart Donut."
It's appeared on "The Ellen DeGeneres Show," ''the Steve Harvey Show," BuzzFeed and TV news.
The 2-inch-thick square is stuffed with strawberry jam and a strawberry Pop Tart, then topped with diced Pop Tart, sprinkles and drizzled jam.
There's also a second flavour: S'mores.
Donut Bar sells about 150 of the doughnuts daily, at $4 each.
Owner-baker Santiago Campa tells the Orange County Register (http://bit.ly/18Ih1XL) that the doughnut was supposed to be a one-week special, but it's become so popular he couldn't pull it off the menu.