Hot Brown Turkey Casserole

My Dad grew up in Pittsburgh and one of his favorite things a called The Turkey Devonshire Sandwich, which is a hot open-faced sandwich on toasted bread with hot turkey, bacon, tomatoes, and a cheese sauce. This sandwich was first served at The Stratford Club in Pittsburgh's Shadyside neighborhood in 1930.

I decided to make him (actually, I had my husband make it!) a Hot Brown Turkey Casserole. This also originated as a sandwich called the Hot Brown and was invented in 1926 at the Brown Hotel in Louisville, Kentucky to absorb the bourbon that guests had the night before. The 2 sandwiches are very similar, though I think the chef in Pittsburgh obviously copied it and changed the name! Anyway, this is the casserole version, which is much easier to make and feeds a hungry or hungover crowd!