We're going to go out on a limb and say this is a better order than the regular hamburger or the ShackBurger. The beer & bacon-simmered caramelized onions are that good (and this is coming from someone who normally detests onions in any form). The burger has a ton of flavor, and it's so simple, there's hard to find anything wrong with it. Word of advice, though: even the cleanest of eaters will need a napkin after this. Prepare for sticky hands.
So how does it compare to a traditional roadside burger? We have to give it to Shake Shack -- eating the Roadside Shack makes you feel like you're at a roadside stand in Montana in the absolute best way possible.
Get it while it lasts! The Roadside Shack is $6.19 for a single, and $8.99 for a double burger.