Good starting place. There are a couple of things wrong with this recipe, in my experience. First, I used a microplane to grate the gruyere and parmesan. To compensate I used slightly more than 1/2 cup of cheese because using a microplane makes the cheese light and airy. I think it would be helpful to list a weight for the cheese, ex. 2 oz, grated, instead of a volume measurement. My bechamel was very thin, maybe there wasn't enough cheese? Not sure but I'd be tempted to use 3T flour/butter.
Rating: 5 stars
I like a Croque-Monsieur as an open faced sandwich. I don't know why Martha has it like this. The picture doesn't even show the bechamel sauce on top. It just looks like a regular ham and cheese sandwich which a Croque-Monsieur certainly isn't. Add a fried egg on top and you have a Croque-Madame. Love that too!
Thought I should also mention that...this is French, so of course it is quite rich and not the kind of sandwich to eat with your hands. But totally worth it.
I think this recipe makes a delicious sandwich. If you love all things French, you will enjoy making croque-monsieur. On another note, if you loved the movie "It's Complicated," you will enjoy making this sandwich. One more thing, my husband loves this too. He has ordered croque-monsieur at a restaurant and said mine (this recipe) was much better.