Mushroom Croque Monsieur: A Veggie-Friendly Twist on a Classic

Enjoy the flavors of a classic Croque Monsieur with a vegetarian twist! This Veggie-Friendly Mushroom Croque Monsieur combines creamy béchamel sauce, savory mushrooms, and melted cheese between two slices of toasted bread. With layers of rich flavors and gooey textures, it’s an indulgent treat that’s perfect for brunch, lunch, or a cozy dinner. This recipe keeps all the creamy, cheesy goodness of the traditional French sandwich while swapping the ham for deliciously seasoned mushrooms.

Ingredients:

  • 5 tablespoons butter, divided
  • 2 tablespoons flour
  • 1 cup milk
  • ½ teaspoon salt, divided
  • ⅛ teaspoon grated nutmeg
  • ¼ teaspoon white pepper
  • 1 medium yellow onion, sliced
  • 8 ounces white button mushrooms, sliced
  • ¼ teaspoon black pepper
  • 2 tablespoons Dijon mustard
  • 4 slices white bread
  • 8 slices Swiss cheese
  • 2 tablespoons grated Parmesan cheese

Instructions:

  1. Prepare the béchamel sauce: In a medium saucepan, melt 2 tablespoons of butter over medium heat. Add the flour, whisking continuously for 1-2 minutes until golden. Slowly add the milk while whisking to achieve a smooth consistency. Stir in ¼ teaspoon of salt, nutmeg, and white pepper. Continue to cook, stirring often, until the mixture thickens, about 3-4 minutes. Remove from heat and set it aside.
  2. Cook the mushrooms and onions: In a large skillet, melt 2 tablespoons of butter over medium heat. Add the sliced onion and cook for 2-3 minutes until it begins to soften. Add the mushrooms, ¼ teaspoon salt, and black pepper. Sauté for 5-6 minutes until the mushrooms are soft and the moisture has fully evaporated. Take off the heat.
  3. Assemble the sandwiches: Spread a thin layer of Dijon mustard on one side of each slice of bread. Place two slices of Swiss cheese on top of the mustard on each slice. Evenly distribute the mushroom and onion mixture onto two slices of bread, spreading it over the cheese. Top with the remaining bread slices, mustard side down, creating two sandwiches.
  4. Top with béchamel and cheese: Spread the béchamel sauce evenly over the tops of each sandwich. Top the sauce with a generous sprinkle of grated Parmesan cheese.
  5. Bake or broil: Preheat the oven to broil. Place the sandwiches on a baking sheet and broil for 3-5 minutes, or until the tops are bubbly and golden brown. Watch carefully to avoid burning.
  6. Serve hot with a fresh side salad or soup for a complete meal.

Conclusion:

This Veggie-Friendly Mushroom Croque Monsieur brings the classic French flavors you love into a vegetarian sandwich that’s just as indulgent. The combination of creamy béchamel, sautéed mushrooms, and melted Swiss cheese makes this a satisfying meal that’s easy to prepare and full of comforting flavor.

Mushroom Croque Monsieur: A Veggie-Friendly Twist on a Classic

A rich, vegetarian take on the French CroqueMonsieur with mushrooms, Swiss cheese, and a creamy béchamel sauce for anunforgettable sandwich.
Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Course Main Course, Sandwich
Cuisine French-inspired
Servings 4
Calories 600 kcal

Ingredients
  

  • 5 tablespoons butter divided
  • 2 tablespoons flour
  • 1 cup milk
  • ½ teaspoon salt divided
  • teaspoon grated nutmeg
  • ¼ teaspoon white pepper
  • 1 medium yellow onion sliced
  • 8 ounces white button mushrooms sliced
  • ¼ teaspoon black pepper
  • 2 tablespoons Dijon mustard
  • 4 slices white bread
  • 8 slices Swiss cheese
  • 2 tablespoons grated Parmesan cheese

Instructions
 

  • Prepare the béchamel sauce: In a medium saucepan, melt 2 tablespoons of butter over medium heat. Add the flour, whisking continuously for 1-2 minutes until golden. Slowly add the milk while whisking to achieve a smooth consistency. Stir in ¼ teaspoon of salt, nutmeg, and white pepper. Continue to cook, stirring often, until the mixture thickens, about 3-4 minutes. Remove from heat and set it aside.
  • Cook the mushrooms and onions: In a large skillet, melt 2 tablespoons of butter over medium heat. Add the sliced onion and cook for 2-3 minutes until it begins to soften. Add the mushrooms, ¼ teaspoon salt, and black pepper. Sauté for 5-6 minutes until the mushrooms are soft and the moisture has fully evaporated. Take off the heat.
  • Assemble the sandwiches: Spread a thin layer of Dijon mustard on one side of each slice of bread. Place two slices of Swiss cheese on top of the mustard on each slice. Evenly distribute the mushroom and onion mixture onto two slices of bread, spreading it over the cheese. Top with the remaining bread slices, mustard side down, creating two sandwiches.
  • Top with béchamel and cheese: Spread the béchamel sauce evenly over the tops of each sandwich. Top the sauce with a generous sprinkle of grated Parmesan cheese.
  • Bake or broil: Preheat the oven to broil. Place the sandwiches on a baking sheet and broil for 3-5 minutes, or until the tops are bubbly and golden brown. Watch carefully to avoid burning.
  • Serve hot with a fresh side salad or soup for a complete meal.
Keyword mushroom croque monsieur

Leave a Comment

Recipe Rating