penguin_bakes
I know I’m a bit late to reply, but you could create a new community on here. Then post to other communities, letting them know this is happening, and create a deadline. On the new “challenge community”, all of the comments are people simply posting the name of the recipe they made and a picture. Only after the deadline has ended, people can start liking comments. Create a new deadline for when they can finish voting by. Then, count the votes. Once you post the top three winners, everyone can post the recipes they made on the main page of the community. Sorry for such a long response, that’s just what I was thinking.