To make the broccoli au gratin, first boil the broccoli in salted water until crisp and then rinse in cold water. Brush a baking sheet or baking dish with butter and layer the broccoli. Season the broccoli with salt and pepper and a little nutmeg to taste.
Finally, top with ham and cheese slices and gratinate the broccoli at 250°C top heat for about 10 minutes. Enjoy your meal!