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Open Faced Croque Monsieurs

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A fun take on a classic, these Open Faced Croque Monsieurs are simple and oh so very cheesy! Serve with a side of soup and enjoy!
Course Mains & Entrees
Cuisine French, American
Keyword croque Monsieurs, dinner, easy, open faced, sandwiches
Prep Time 10 mins
Cook Time 12 mins
Total Time 22 mins
Servings 4 servings
Calories 690
Author Laurie McNamara


  • 2 tablespoons butter
  • 2 tablespoons unbleached all-purpose flour
  • cups whole milk
  • 1/8 teaspoon ground nutmeg
  • kosher salt to taste
  • freshly ground black pepper to taste
  • cups freshly grated gruyere cheese divided
  • 4 dinner rolls
  • 1/4 cup Dijon mustard
  • 16 thin slices of deli ham


  • Preheat oven to 350°.
  • In a small pot, melt butter over medium heat. Stir in flour until paste forms. Cook 1 minute, then whisk in milk. Continue stirring until sauce thickens, 5 minutes. Stir in salt, pepper, nutmeg and 1 cup of the gruyere cheese. Set aside.
  • Slice rolls in half and spread Dijon mustard over each half. Place into baking dish. Top with 2 slices deli ham.
  • Pour cheese sauce over top and sprinkle with remaining gruyere cheese.
  • Bake 10-15 minutes until hot and bubbly. Serve.


Serving: 1g | Calories: 690kcal | Carbohydrates: 28g | Protein: 44g | Fat: 44g | Saturated Fat: 21g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 17g | Trans Fat: 1g | Cholesterol: 139mg | Sodium: 1959mg | Potassium: 551mg | Fiber: 2g | Sugar: 6g | Vitamin A: 725IU | Vitamin C: 1mg | Calcium: 615mg | Iron: 3mg