From the author of National Book Award finalist Hey, Kiddo. The Breakfast Bunch is excited for the upcoming bake sale—and the best part is that it's raising money for an awesome field trip.  But when all the snacks go missing, it's no laughing matter.  Someone is sabotaging the bake sale.  But why? Lunch Lady and the Breakfast Bunch are hot on the trail . . . one brownie crumb at a time.