Croque Monsieur Casserole

great breakfast idea for using up leftover ham
Great breakfast idea for using up leftover ham
Share it on your social network:
Or you can just copy and share this url


1 Baguette day-old baguette (12 oz.), cut into 20 slices
2 tbsp Butter melted
2 tbsp Dijon mustard
9 oz Gruyère cheese shredded
8 oz Ham thinly sliced
4 Eggs
1 ¼ cups Whole milk
Salt optional
Black pepper optional

Nutritional information


Croque Monsieur Casserole


A Croque Monsieur Casserole is a fantastic way to use up leftover baked ham. I love to make this for breakfast in the days after Christmas when I am always looking for ways to use up leftovers. A croque monsieur is a traditional French sandwich which is made with boiled ham and sliced cheese between slices of bread and topped with grated cheese, salt and pepper.

I usually make this take on a croque monsieur by slicing a 1 day old baguette into 20 slices. If your baguette is fresh, toast it lightly beforehand. Layer up the bread, cheese and ham in a casserole dish before pouring over a whisked egg and milk mixture. Bake the casserole in a preheated oven until it is golden brown on top. I often prepare this dish the night before and simply place it in the oven the next morning.

To make Croque Monsieur Casserole, you will need the following ingredients:

Ingridiens for Croque Monsieur Casserole

Steps to make Croque Monsieur Casserole


Mix bread with melted butter


Cut half of the baguette slices into ½ inch chunks. Toss the bread chunks in a bowl with the melted butter.


Spread mustard on bread


On the remaining slices of bread, spread the dijon mustard.


Arrange the bread in a casserole dish


Overlap the slices of bread in the casserole dish and sprinkle ½ cup of the cheese over the top.


Place ham on the bread


Fold the ham slices in half and place them in an even layer over the bread and cheese. Sprinkle half of the remaining cheese on the ham.


Add bread and remaining cheese


Scatter the buttered bread chunks on top and sprinkle over the remaining cheese.


Whisk eggs and milk


Whisk the eggs and milk together in a large bowl and season with salt and pepper. Pour the egg mixture over the casserole. Allow to rest at room temperature for about 30 minutes.


Heat oven

As the casserole rests, preheat the oven to 400˚F.




Bake the casserole in the upper third of oven for 30 minutes until it puffs up and the top is golden-brown and slightly crispy.




Allow to cool for 5 minutes before serving.

This Croque Monsieur Casserole is a delicious and novel way of using up leftover ham! Try it next time you have leftover ham and don't forget to come back and leave a review with your thoughts.

Jeff is a 38-year-old bachelor who prefers not to waste his time on salads and light meals. He’s a true carnivore who knows how to enjoy food to the max! Jeff will tell you how to cook rich and filling meals from scratch, bringing some real meaty decadence to your kitchen. His recipes are sure to satisfy every meat lover!

Parmesan Potato Casserole Recipe-Potato Bake With Garlic and Parmesan Cheese Recipe-Garlic Parmesan Scalloped Potatoes
Parmesan Potato Casserole
Homemade Beef Bouillon Recipe-How To Make Homemade Beef Bouillon -Delicious Homemade Beef Bouillon
Homemade Beef Bouillon
Add Review
Add Comment

Recipe Reviews

Average Rating:
Total Reviews: 11
Janice Matherly

My favorite French casserole, I also really enjoyed the parmesan potato casserole which I had with garlic bread.

Kacey Gravatt

Mouthwatering recipe so easy to follow the steps and taste yummy :)

Maren Lepre

Me and my family are obsessed with this it's flavorful and filling which is exactly what I was looking for.

Roxanne Bredl

Thought I wouldn't manage to do so well with making this but the monsieur casserole baked through and through.

Katarina Mcniell

Can't believe I managed to perfect this croque casserole it was so tasty!

Estefania Possemato

Handsdown the best casserole I've ever made in my life!!

Jazlynn Mhoon

Not too satisfied with how it came out slightly dry but that's my fault, decided to add some ketchup to the top and it was the BOMB!

Mika Ofori

Takes a little bit of time to make his but I enjoyed it nonetheless for sure.


Didn't use whole milk instead went with soy and swapped out gruyere cheese with goat cheese cause I'm lactose.

Nathalie Kaczkowski

Huge crowd pleaser made it yesterday for my co-workers office birthday party and everyone devoured it, got a bunch of compliments too.


Well done! Verified!

Write your own review

You can optionally upload your own image along with a review

Add Your Comment