Croque Monsieur Casserole

We haven't tried this yet, but look forward to having it this month.  A quick request for the recipe already, so here it is!  Pics will be posted after we make it.  Enjoy!

1 day-old baguette (12 oz) cut into 20 slices (toast lightly if bread is fresh)
2 tbsp. butter, melted
2 tbsp. Dijon mustard
9 oz. Gruyere, shredded
8 oz. thinly sliced black forest ham
4 eggs
1.25 C. whole milk
Salt/Pepper

Chop half the bread into 1/2-inch pieces.  In a bowl, toss with the melted butter.

Spread mustard over remaining bread and arrange, overlapping slightly, in a greased 2-qt. baking dish.  Sprinkle 1/2 C. of cheese on top.  Fold ham slices in half and arrange in an even layer over bread.  Top with half of the remaining cheese.  Sprinkle with the chopped bread and remaining cheese.

In a bowl, whisk the eggs and milk; season.  Pour over the casserole and let stand at room temperature for 30 minutes.

Position a rack in the upper third of the oven; preheat to 400 degrees.  Bake until casserole puffs and top is golden-brown, about 30 minutes.  Let cool for 5 minutes before serving.

*Recipe from Everyday with Rachael Ray "The New Casseroles" magazine insert.