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Croque Monsieur Sliders

Elevate your ham and cheese sliders by adding a bechamel-like sauce to create the most amazing Croque Monsieur Sliders! They are cheesy, flavor-packed, and served on the fluffiest Homemade Hawaiian rolls!

Next, try our Spinach Artichoke Dip Sliders!

a slider with ham and bechamel sauce being held up in a pan of them.

Our latest recipe is our take on the classic ham and cheese slider but it’s the more sophisticated, cooler older sibling that studied abroad in France! Our Croque Monsieur Sliders will elevate everything you know about this beloved slider, especially if you make them with our amazing Homemade Hawaiian Rolls! Trust me, whether you make these for a game-day snack or as a way to use up some leftover holiday ham, you will absolutely love them!

Ingredients Needed

a tray of roll, sliced ham, bowls of cheese, thyme, butter, Dijon, and flour and fresh thyme labeled.
  • Hawaiian Rolls – I’m sure you all know about this classic that you can buy in the store in the orange bag, but trust me, making them yourself results in a much fluffier, much more delicious, and slider-perfect roll!
  • Ham – Sliced deli ham or leftover ham, either is delicious!
  • Gruyere and Parmesan Cheese – This combo is perfect for this elevated ham and cheese slider! We suggest sticking to Gruyere, but you could use Swiss or sub the Parmesan for another hard nutty cheese like Asiago or Romano.
  • Flour, Butter, Milk, and Salt and Pepper – For the creamy sauce!
  • Dijon Mustard – To add just the right kick and perfect compliment! Plus, what’s a ham and cheese without the mustard? Have you made your own, yet?
  • Fresh Thyme – Just the right savory touch!

So Easy to Make

a picture of a cutting board with the tops of rolls and then the tray with the bottom half.

Slice the Rolls

Once you have your homemade (preferably) Hawaiian Rolls, then it’s just a matter of giving them a little slice in half to be able to assemble.

a tray of halved buns, sliced ham on top, cheese, and then the top of the buns.

Fill the Sliders

A nice layer of gruyere, plenty of ham, and then another healthy helping of more gruyere cheese before slathering on some Dijon mustard inside the top of your rolls before topping those gorgeous sliders.

3 pictures of a pot being made into a bechamel sauce.

Create the Sauce

Very similar to a béchamel sauce, this creamy sauce is made with a roux and milk, but it also has a healthy bit of Parmesan cheese!

a tray of sliders with sauce on top and then it all baked.

Add Sauce and Bake!

Pour that creamy sauce on top, finish with some fresh thyme, and then give those gorgeous Croque Monsieur Sliders a bake!

a slider with ham and bechamel sauce being held up in a pan of them.

Until they’re gooey and delicious! The perfect combo of sweet rolls, salty ham, cheese, and a creamy cheesy sauce with just a hint of savory thyme.

a slider with ham and bechamel sauce being held up in a pan of them.

Friends, your slider game will never be the same, with this one!

Recipe Tips

Homemade rolls are best!

While of course, use what you have, trust me, these are so much better if you make your own Hawaiian Rolls. That’s because our homemade version makes rolls that are so much fluffier than the store-bought ones. You can also use your other favorite dinner rolls, too, but the sweetness of the Hawaiian Rolls really adds to the whole slider.

Freshly grate cheese

Anything you want the best melt with your cheese, always freshly grate it. That’s because pre-shredded cheeses have anticlumping agents added and because of that, they won’t melt as well as when you shred it yourself.

Cheese Sauce or Béchamel Sauce?

While our regular Croque Monsieur uses a béchamel sauce, we opted for a béchamel-like sauce for this one because a traditional béchamel sauce does not have cheese and it has a hint of nutmeg. With that said, you could absolutely add the Parmesan cheese to the gruyere and add a touch of nutmeg to the sauce to make it a traditional béchamel.

How many sliders?

So my original Hawaiian Rolls recipe calls for making 15 rolls, which you of course can still use for this. When I know I’m making them for sliders, I make bigger rolls and make 12. If you’re buying store-bought then they come in packs of 12.

Great the next day, too!

Pro tip: Reheat them in the skillet the next day and make those leftovers into a pressed Croque Monsieur Slider!

a slider with ham and bechamel sauce being held up in a pan of them.

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Enjoy! As always, if you make this recipe or any of my others, I love to hear what you think! Leave a comment below, email me, or you can find me on Facebook, Instagram, and Pinterest!

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a slider with ham and bechamel sauce being held up in a pan of them.

Croque Monsieur Sliders

A ham and cheese slider, but elevated!
5 from 8 votes
Print Pin Rate
Course: Appetizer, Main Course, Sandwich
Cuisine: American-French
Servings: 12 sliders
Author: Tracy

Equipment

Ingredients

Sliders

Cheese Sauce

  • 4 tablespoons butter
  • 4 tablespoons flour 34 g
  • 2 cups milk 2%
  • 1/3 cup Parmesan cheese shredded
  • 2 teaspoons fresh thyme
  • 1/8 teaspoon ground pepper
  • 1/4 teaspoon salt
  • 1 tablespoon Dijon mustard

Instructions

  • Slice Rolls: Slice rolls in half and separate the bottom half from the top, lining the bottom in a large baking dish.
  • Layer the Sliders: Add 1/2 of the Gruyere cheese to the bread, then add a layer of sliced ham, and finish with the rest of the cheese. Add Dijon to the inside of the tops of the rolls and then place them back on top ham and cheese layered rolls.
  • Preheat Oven: Preheat the oven to 350 degrees F.
  • Create Sauce: In a small saucepan add the butter and turn the heat to medium. Add the flour and whisk in the flour as the butter melts to create a roux. Once a thick slightly browned roux has formed, slowly add the milk, just a little bit at a time, whisking as you add and as it all is brought to a gentle boil.
    Once all of the milk is incorporated, add the dijon, salt, pepper, thyme, and Parmesan cheese. Whisk to combine turn heat down to low and let simmer for another 3-4 minutes.
  • Add Sauce and Bake: Gently pour the sauce over the top of the rolls. Bake for 15-18 minutes until the cheese has melted and sauce has set.
  • Enjoy!

Video

Notes

Storage
Store these in the fridge for up to two days (although may differ if using leftover ham). 
Reheat
We found that these are so good when reheated in a pan with butter and then pressed a little for a pressed grilled slider. Go wild and make some more fresh sauce to add on top! 
Substitutions
Rolls: Hawaiian Rolls are really the best because of the sweetness of the rolls, but of course, you can use regular dinner rolls or your favorite store-bought. But if you haven’t tried our Hawaiian Rolls yet, trust me, they make all the difference! 
Ham: Use leftover holiday ham sliced thinly or thinly sliced deli ham.
Cheese:  You can use Swiss in place of gruyere and another hard cheese like romano or asiago in place of the Parmesan.  For the best melt, always shred your own! 
Milk: 2% is our go-to, but you could use whole milk or even swap in some half-and-half for a much thicker richer sauce. 
Dijon: Use your favorite style of mustard.
Make Ahead
Prep the sliders a day ahead, store the whole baking tray in the fridge, and cover with foil or plastic wrap. When ready, take the tray out of the fridge to bring it up to room temp and then make your sauce.  

Nutrition

Calories: 399kcal | Carbohydrates: 19g | Protein: 24g | Fat: 25g | Saturated Fat: 13g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 8g | Trans Fat: 0.2g | Cholesterol: 86mg | Sodium: 964mg | Potassium: 212mg | Fiber: 0.3g | Sugar: 6g | Vitamin A: 537IU | Vitamin C: 1mg | Calcium: 425mg | Iron: 1mg
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5 from 8 votes (7 ratings without comment)

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