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Oven-Baked Three-Layer Croque Monsieur Sandwiches

4 Servings

35 minutes

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During a trip to Paris and a visit with master fromager Laurent Dubois, we were reminded just how delicious a well-made croque monsieur can be. Dubois’ version of the iconic French ham and cheese sandwich inspired us to develop a simple, fuss-free recipe that’s doable on a weeknight. A béchamel, or flour-thickened white sauce, is classic, but we take a shortcut and stir together crème fraîche, shredded Gruyère (or Comté) cheese, a couple tablespoons of mustard and small measure of nutmeg. The mixture mimics the sauciness of a roux-thickened béchamel. And instead of griddling the sandwiches one or two at a time, we cook four at once on a baking sheet in the oven. They’re finished with a final slather of “sauce” and a blast of broiler heat for browning. Sliced sandwich bread with a sturdy crumb rather than a soft, cotttony texture is best. We modeled our recipe on Dubois’ three-layer creation, so you will need a total of 12 slices for four sandwiches.




Don’t substitute sour cream for the crème fraîche in this recipe. Crème fraîche is higher in fat and will stand up to high heat; sour cream is leaner and will curdle under the broiler. Also, keep a close watch on the sandwiches as they broil because they can scorch in a matter of seconds.

35 minutes


  • ½

    cup crème fraîche

  • 2

    tablespoons Dijon mustard


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Anna S.
April 7, 2024
This sandwich, with its creme fraiche & gruyere replacing a is one of these recipes that is a gift from above.
Whit H.
February 18, 2024
Made as it is written; used sourdough bread. Added sunny side up egg on top. Delicious.
Stacey D.
December 24, 2023
A bit soupy
I’ve been baking my grilled cheese sandwiches in this same method for years. So when I saw this combo of ingredients, I was quite excited. This recipe uses 3 layers of bread, which we hadn’t used before. Our sandwiches ended up a little soggy and probably not what you were looking for. Plus too much bread. After trying this, we’ll go back to our 2 slices of bread, butter, and co-jack cheese at 450 degrees for 10 min. Thank you for giving us something new to try, it just didn’t work for us.