The Pie Baking Contest is mentioned very briefly in the game, School of Dragons.
As a pie baking contest, presumably participants cook pies and showcase them on flavor. The best tasting pie is determined by more than one judge, but the exact number is not specified.
|“||The annual pie baking contest needs supplies and judges, Mulch and Bucket are fond of pumpkin||”|
|— School of Dragons|
The Pie Baking Contest is just briefly mentioned in a Farm Job description. Farm Jobs are quests of a sort in which the player must grow and harvest the required items on their farms and turn them in to complete the Farm Job for rewards.
Mulch and Bucket are named in the Farm Job, but it is not clear whether they will be contestants or judges.