Gluten-Free Croque-Monsieur Recipe


This makes a classic white sauced-topped croque-monsieur. If using a storebought gluten-free bread that comes in small slices (like Udi's) consider making a few additional sandwiches.

Recipe Details

Gluten-Free Croque-Monsieur Recipe

Active 30 mins
Total 45 mins
Serves 4 servings


  • 8 slices gluten-free white sandwich bread, homemade or store-bought

  • 2 tablespoons unsalted butter

  • 3 tablespoons sweet rice flour

  • 2 1/2 cups whole or 2% milk, warmed

  • 1/4 teaspoon salt

  • 1/2 teaspoon freshly ground black pepper

  • 8 ounces Gruyère cheese, grated (about 2 cups)

  • 1/4 cup freshly grated Parmesan cheese

  • 1 teaspoon Dijon mustard

  • 1/2 pound thinly sliced ham


  1. Preheat the oven to 425oF. Place the bread on an 18 by 13-inch rimmed baking sheet. Bake, flipping once, until the slices begin to turn golden brown. Remove from the oven and set aside. Leave the oven on.

  2. Prepare the sauce: In a small pot, melt the butter. Add the sweet rice flour. Cook for 3 minutes, whisking constantly. The paste will turn a light golden brown. In a slow and steady steam, add the milk. Cook, whisking constantly, until the sauce begins to bubble. Season with salt and pepper. Stir in 1/4 cup of the Gruyère and all of the parmesan. Whisk until smooth.

  3. Make the sandwiches on the baking sheet. Spread a thin coat of mustard on each piece of bread. Place a few slices of ham and a generous sprinkle of Gruyère on each of 4 bread slices. (Reserve about one-quarter of the cheese.) Top with a second slice of bread, mustard side down. Spoon a generous amount of white sauce onto each sandwich. Divide the remaining Gruyère over the top.

  4. Return the sandwiches to the oven. Bake for 5 minutes to heat.

  5. Turn on the broiler. Broil until the cheese is melted, light brown, and bubbling. Serve immediately.

Nutrition Facts (per serving)
867 Calories
37g Fat
83g Carbs
48g Protein
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Nutrition Facts
Servings: 4
Amount per serving
Calories 867
% Daily Value*
Total Fat 37g 48%
Saturated Fat 19g 97%
Cholesterol 135mg 45%
Sodium 1785mg 78%
Total Carbohydrate 83g 30%
Dietary Fiber 4g 13%
Total Sugars 14g
Protein 48g
Vitamin C 0mg 0%
Calcium 951mg 73%
Iron 6mg 32%
Potassium 619mg 13%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)