Repurposing Thanksgiving leftovers in a sandwich is so damn predictable. When you're cramming cold chaos between a couple slices of bread just to eat over the kitchen sink, you've given up.
Don't let the recipe intimidate you, sure there's a few steps to this dish but if it's just like assembling lasagna SO CALM THE FUCK DOWN AND GET WITH THIS CAIRO COMFORT FOOD
Put down those mediocre mashed potatoes and pick up this superb side dish. Sure, a gratin is just a fancy sounding casserole but nobody will give a damn what the name is once they taste it.