Copycat In-n-Out Burger

I may actually like this more than my copy cat McDonalds burger, and once again it's all about the onion for me. While the McDonalds one uses rehydrated onion bits, this one just uses a slice of onion. With the secret sauce and the tomato and lettuce and crisped up bun, it tasted just like the real thing!

The only mysterious part here is how do they make it so that the onion and tomato always fit the bun perfectly? The center parts of both fit just right for me. So doesn't that mean they'll have to toss out most of the onion and tomato (or use it as scraps for other things?). I may need to take up employment at In-n-Out to find out!

Original recipe