Alright, I said I didn't feel like making suggestions but I guess I changed my mind....
If your going to have "contests" players need to feel like they have a chance at winning a prize. If the contest is to make the most food and we are competeing against ALL other players ... We know we are not going to win. This type of contest will never work. Please give us some credit for having COMMON SENSE !!! We have all seen bakery with hundreds of appliances and we know they will win.
Instead, can't you have a contest where all players are challenged to cook 300 (feel free to adjust this number) peach cobblers over the weekend ... AND everyone who does it gets the prize.
Additional feedback... I don't think the prize matters as much as having a FAIR contest. It wouldn't matter to me if the prize was gems or an exclusive decoration. What matters is ... If the contest is worth my time. This one isn't... Sorry