Mod.comment:
To clarify this challenge. The recipe challenge is about an ingredient. Burger buns are the chosen ingredient. You do not need to make a burger bun. The challenge is not about recipes for making a burger bun! The challenge is about using a burger bun (bought or home-made) in a dish. The dish could be a traditional hamburger or a salad or a bread pudding or whatever you can come up with.
Thankyou for clarifying it... I think I confused the issue more trying to explain things.
TastyReuben and yourself have done a much better job.
So in summary (and I hope this doesn't confuse things more) :
The hamburger bun is an ingredient. You don't have to bake your own bun, but you can if you want to. You don't have to make a hamburger, but you can if you want to. You don't have to make a burger of any kind, but you can if you want to. You don't have to come up with a weird or wacky way to use a burger bun, but you can if you want to.
As judge I wouldn't want to push people in any particular direction... but will just say this. I do love burgers, and especially those that for whatever reason stand above the average mass produced takeaway versions (you know what I mean). But I also love creativity and imaginitive uses of an ingredient that work in a way that might not have been the original purpose of that ingredient.
If you use the burger bun to just make a sandwich, then of course the recipe would be eligible and up for judging. But I will caution that that sandwich is going to have to be something pretty special and uniquely so. Likewise if you just want to submit the bun, bagel, whatever, as the actual stand alone entry.
But at the end of the day, a good recipe has to make sense logically and hopefully artistically in unison, be reasonably achievable, and above all else taste and look delicious.