When Costco Gives You Croissants, Make a Croque Monsieur Casserole

What's a boy to do with a kitchen filled with ginorous packages of croissants, ham, cheese, and mustard? Go all Betty Crocker on their asses.

THE CROQUE MONSIEUR. My first genuine C.M. (genuine as in eaten in Paris, its birthplace ) was at a little wedge of a bistro in the third arrondissement about 30 years ago. The pulse of new love, years of near-fat-free dieting, and the swirl of Parisian life held hands and duped the neurons in the pleasure center of my brain to deem this humble ham and …