Name: Baked Croque Monsieur Casserole
Prep time: 25 min
Cook time: 1 h
Total time: 1 h 25 min
Cuisine: French
Ingredients: 5-6 cups sourdough, brioche or country loaf, 1-2 days old and cut into 2-inch cubes; 1 ½ cups cubed ham; 10 tablespoons salted butter, divided; 1 leek, whites only, cut into half moons; 6 eggs; 1 ¼ cups half-and-half; 2 tablespoons Dijon mustard; 1 ½ teaspoons coarse kosher salt, divided; 1 teaspoon ground black pepper, divided; 3 cups Swiss or Gruyere cheese, grated and divided; 2 tablespoons Parmesan cheese, finely grated; 4 tablespoons flour; 2 cups whole milk; 1/4 teaspoon grated nutmeg; 1 tablespoon chives, chopped

Ingredients

Scale

5–6 cups sourdough, brioche or country loaf, 1-2 days old and cut into 2-inch cubes
1 ½ cups cubed ham
10 tablespoons salted butter, divided
1 leek, whites only, cut into half moons
6 eggs
1 ¼ cups half-and-half
2 tablespoons Dijon mustard
1 ½ teaspoons coarse kosher salt, divided
1 teaspoon ground black pepper, divided
3 cups Swiss or Gruyere cheese, grated and divided
2 tablespoons Parmesan cheese, finely grated
4 tablespoons flour
2 cups whole milk
1/4 teaspoon grated nutmeg
1 tablespoon chives, chopped

Cook Mode Prevent your screen from going dark

Instructions

Preheat the oven to 375°F and grease a 9×13 baking dish. Place the bread cubes and cubed ham into the dish, tossing them lightly. Set aside.
Melt 1 tablespoon of butter in a saucepan over medium heat. Add the leeks and sauté until soft. Evenly distribute them over the bread and ham.
Melt 5 tablespoons of butter in the microwave. In a mixing bowl, combine the melted butter, eggs, half-and-half, Dijon mustard, 1 teaspoon kosher salt, and ½ teaspoon black pepper.
Pour half of the egg mixture over the bread, gently pressing down to help absorption. Then pour the rest and repeat. Add the cheese, tossing to distribute evenly.
Cover with aluminum foil and bake for 25 minutes. Remove the foil and bake for another 15 minutes or until the internal temperature is 160°F. Top with Parmesan cheese and broil for 1-2 minutes until golden brown.
While baking, melt the remaining 4 tablespoons of butter. Whisk in flour to form a roux, then slowly whisk in the whole milk until the sauce thickens. Stir in nutmeg, remaining salt, and pepper before removing from heat.
Serve the sauce over the casserole or on the side. Sprinkle with chives before serving.
If you try this casserole, please come back and leave a comment or a star rating.

Last Step:

Please leave a rating and comment letting us know how you liked this recipe! This helps our business to thrive and continue providing free, high-quality recipes for you.

Notes

For best results, use bread that is a couple of days old to achieve optimal texture.
Feel free to customize with your favorite cheeses or add vegetables for extra flavor.

Author: dani
Prep Time: 25 minutes
Cook Time: 60 minutes
Category: Casserole
Method: Baked
Cuisine: French

Nutrition

Serving Size: 1 serving
Calories: 380
Sugar: 3g
Sodium: 900mg
Fat: 22g
Saturated Fat: 13g
Unsaturated Fat: 6g
Trans Fat: 0g
Carbohydrates: 30g
Fiber: 1g
Protein: 14g
Cholesterol: 150mg