Indulge in the rich flavors of a classic Croque Monsieur in the form of a delicious casserole. This easy-to-make dish is perfect for brunch, lunch, or dinner, making it a versatile option for any occasion.
Why You’ll Love This Recipe?
- The combination of buttery sourdough English muffins, savory ham, and gooey cheese creates a flavor explosion in every bite.
- With minimal prep time, this casserole is a convenient option for busy days or meal prepping.
- The creamy egg mixture binds everything together, adding a velvety texture to the dish.
Ingredient Notes:
- Sourdough English muffins: Provide a hearty base for the casserole, but you can substitute with any bread of your choice.
- Dijon mustard: Adds a tangy kick to the dish, but you can use regular mustard as a substitute.
- Swiss or Gruyere cheese: These cheeses melt beautifully and add a nutty flavor, but feel free to use any melty cheese you prefer.
Step-by-Step Instructions:
- Preheat the oven and grease a baking dish.
- Layer the cubed English muffins in the dish and drizzle with melted butter and Dijon mustard.
- Top with ham and cheese, then pour the egg mixture over everything.
- Bake until golden and bubbly, then sprinkle with Parmesan cheese before serving.
Helpful Tips:
- For a crispy top, broil the casserole for a few minutes before serving.
- Customize the casserole by adding veggies like spinach or mushrooms for extra flavor.
Expert Tips for the Best Results:
- Let the casserole sit for a few minutes after baking to set before serving.
- Use high-quality ingredients for the best taste experience.
Serving Suggestions:
Pair this Croque Monsieur Casserole with a fresh green salad and a glass of white wine for a complete meal.

Storage and Reheating Tips:
Store any leftovers in an airtight container in the fridge for up to 3 days. Reheat in the oven or microwave until heated through.
Frequently Asked Questions:
- Can I make this casserole ahead of time? Yes, assemble the dish the night before and bake it when ready.
- Can I use whole-grain English muffins instead? Absolutely, feel free to swap for a healthier option.
- Can I freeze this casserole? While it’s best fresh, you can freeze leftovers for up to a month.
- How can I make this dish more kid-friendly? Add a sprinkle of crushed crackers on top for a crunchy twist.
Conclusion:
Treat yourself to the indulgent flavors of a Croque Monsieur with this easy casserole recipe. Whether you’re hosting a brunch or looking for a comforting meal, this dish is sure to satisfy your cravings. Give it a try and let us know how you liked it!
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Croque Monsieur Casserole
- Prep Time: 20 mins
- Cook Time: 40 mins
- Total Time: 1 hr
- Yield: 6–8 servings 1x
- Category: Main-course
- Method: Baking
- Cuisine: French
Description
This Croque Monsieur Casserole is a delicious twist on the classic French sandwich, featuring layers of sourdough English muffins, ham, and Swiss cheese baked in a rich and creamy egg mixture.
Ingredients
Main Ingredients:
- 6 sourdough English muffins, cut into cubes
- 10 tablespoons butter, divided
- 2 tablespoons Dijon mustard
- 8 large eggs
- 1 1/4 cups half-and-half
- 1 1/2 teaspoons kosher salt, divided
- 3/4 teaspoon freshly ground black pepper, divided
- 1/2 pound deli sliced ham
- 3 cups grated Swiss or Gruyere cheese, divided
- 2 cups milk
- 4 tablespoons all-purpose flour
- 1/8 teaspoon grated nutmeg
- 3 tablespoons freshly grated Parmesan cheese
Instructions
- Prepare Ingredients: Preheat the oven and grease a baking dish. Cube the English muffins and cook the ham.
- Make Egg Mixture: Whisk together eggs, half-and-half, mustard, salt, and pepper in a bowl.
- Assemble Casserole: Layer English muffins, ham, and cheese in the baking dish. Pour egg mixture over the layers.
- Bake: Cover and bake until set. Remove cover, sprinkle Parmesan, and bake until golden.
Notes
- You can customize this casserole by adding vegetables or different types of cheese.
- Allow the casserole to cool slightly before serving to set properly.
Nutrition
- Serving Size: 1 slice
- Calories: 320 kcal
- Sugar: 3 g
- Sodium: 800 mg
- Fat: 20 g
- Saturated Fat: 10 g
- Unsaturated Fat: 8 g
- Trans Fat: 0 g
- Carbohydrates: 22 g
- Fiber: 1 g
- Protein: 15 g
- Cholesterol: 160 mg