Does this dish freeze well?

I haven't tried freezing it, but I think you could probably prep the whole thing (minus the butter-drizzled fresh bread crumbs), wrap it, and store it in the freezer. I would do make fresh bread crumbs right before you want to bake it (so they don't dry out in the freezer). Bake it according to the recipe and just keep an eye on it in the oven to see if it needs to bake any longer (it should be good to go once the cheese is browned and the dish is bubbling).