Yummy!

The Cupcake Queen by Heather Hepler (2009)

When Penny Lane moves from Manhattan to Hog's Hollow, it's more than culture shock. Her mom and dad say they are "taking a break," so she assumes she'll be back home in NYC soon. Instead her mom opens a cupcake bakery and Penny ends up as chief cupcake designer--plus she has to start her freshman year at a new high school and try to make new friends. But nothing seems to work out smoothly, as Penny immediately makes an enemy of the queen bee of the popular crowd--in a cupcake fiasco that will have readers laughing. Penny finds a few kindred spirits and a prank battle ensues, but Penny has to endure life lessons about other relationships as well.
Excellent novel for grades 6-9. No sex, language, violence.