Croque Monsieur with Mushrooms

This is the Cambo version of the traditional French sandwich, great for brunch or weekday lunch. Leave out the mushrooms and replace them with slices of good-quality ham or leftover roast gammon and you’ve got the classic Croque Monsieur.

If you have any béchamel sauce left over, use it to make cauliflower cheese or a vegetable gratin.