Croque Monsieur Gruyere Ham

Category: Tasty and Easy Sandwich Recipes

This beloved Croque Monsieur offers a classic Parisian experience: thick-cut country bread layered with silky homemade béchamel, plenty of nutty Gruyere cheese, and savory ham. Assembled and baked until golden and bubbly, with herbes de Provence for aromatic lift, each bite is rich and gooey yet perfectly crisp. The creamy sauce, made with butter, flour, milk, a duo of mustards, and nutmeg, infuses each layer. Ready in about half an hour, this satisfying French sandwich is ideal for lunch or a casual dinner, all with make-ahead options for busy days.

Chef with a smile, ready to cook and serve.
Updated on Fri, 13 Jun 2025 21:55:14 GMT
A toasted sandwich with meat and cheese. Pin
A toasted sandwich with meat and cheese. | yummygusto.com

Croque Monsieur has a special place in my kitchen as the ultimate comfort sandwich when I crave a taste of France. Whether for brunch or as an upgraded lunch, this recipe brings crisp golden bread, gooey cheese, and fragrant herbs to every bite. I first fell in love with croque monsieur at a Parisian cafe, and each time I make it at home, those memories return.

I discovered this version after eating at Buvette in NYC. My family now requests it for snowy weekend lunches, and it has become our go-to treat.

Ingredients

  • Unsalted butter: Gives the béchamel its silky base so use fresh high-quality butter for the best flavor
  • All purpose flour: Thickens the sauce and should be fresh and lump-free
  • Bay leaves: Add subtle depth and herbal notes to the béchamel
  • Whole milk: Creates a creamy texture so choose a full-fat milk for richness
  • Whole grain mustard and Dijon mustard: Add tang and complexity try to use a good French grainy mustard for authenticity
  • Freshly grated nutmeg: Brightens the sauce and freshly grated gives better aroma than pre-ground
  • Kosher salt: Seasons every layer
  • Country style French bread boule: Brings structure and crunch slice evenly for best results
  • Deli ham: Provides the classic meaty layer be sure it is thinly cut and flavorful
  • Gruyère cheese: Melts beautifully for that iconic pull so grate it fresh for best texture
  • Herbes de Provence: Lends aromatic complexity select a blend with thyme rosemary and lavender

Step-by-Step Instructions

Make the béchamel sauce:
Begin by melting unsalted butter in a medium saucepan over medium heat then add flour and stir diligently until the mixture blends together and becomes golden and fragrant this usually takes about four to five minutes to develop a nutty aroma
Add milk and flavorings:
Toss in two bay leaves and gradually whisk in whole milk pouring slowly to keep the mixture free of lumps keep whisking occasionally for about five minutes until the sauce thickens to the texture of Alfredo sauce then remove from heat and whisk in mustards nutmeg and salt for a balanced tangy kick
Prepare the bread:
Slice the French bread boule into eight half inch thick slices making sure each piece is as even as possible for consistent toasting
Spread the béchamel:
Use a spoon or offset spatula to spread a generous layer of béchamel on one side of each bread slice dividing the sauce evenly so each bite is creamy
Assemble with ham and cheese:
Take four slices and cover with half of the grated Gruyère then pile shaved ham on top distributing it evenly top with a second bread slice béchamel side up then add the rest of the Gruyère and sprinkle with herbes de Provence
Bake the sandwiches:
Place sandwiches on a baking sheet and bake in a preheated oven at four hundred degrees Fahrenheit for about fifteen minutes until the cheese is golden bubbling and irresistible for an extra golden top finish under a low broil for about a minute while watching closely
Cool and serve:
Let sandwiches cool for a few minutes after baking before slicing in half using a sharp knife for clean edges then serve warm and gooey
A sandwich with cheese and meat on a wooden cutting board.
A sandwich with cheese and meat on a wooden cutting board. | yummygusto.com

Known for its rich filling croque monsieur makes a hearty brunch. Gruyère is my favorite part for its nutty melt try not to substitute if you can find it as it truly makes this sandwich shine I remember making a version with Swiss once and it simply did not have that same Parisian magic.

Storage tips

These sandwiches keep well in the refrigerator for up to three days Store them in an airtight container and reheat in a low oven or toaster oven to revive the crunch Avoid microwaving as it softens the bread

Ingredient substitutions

If you cannot find Gruyère try Emmental or a good quality Swiss cheese For more flavor in the béchamel add a handful of minced shallots Place thin turkey slices instead of ham if needed Gluten free flour blends can be used in the béchamel

Serving suggestions

Serve your croque monsieur with a crisp green salad tossed in a light vinaigrette for balance French cornichons on the side add a delightful tang It also pairs well with a bowl of tomato soup especially for colder days

Cultural context

The croque monsieur started as a Parisian bar snack in the early 1900s It quickly became a beloved bistro staple for its decadent flavor and cozy satisfaction The sandwich has inspired many offshoots over the years but the classic version never goes out of style

A sandwich with cheese and herbs on a plate.
A sandwich with cheese and herbs on a plate. | yummygusto.com

With this recipe each bite feels like a trip to a sunny Parisian sidewalk café The aroma while baking always sends my family straight to the kitchen and I promise it is just as magical in your home

Recipe Q&A

→ What type of bread works best?

Country-style French bread is ideal for its sturdy texture and crisp crust, holding up well to the creamy sauce and melted cheese.

→ Can I make the béchamel ahead of time?

Yes, béchamel can be prepared up to two days in advance and refrigerated. Cover it directly with plastic wrap to prevent a skin.

→ Is it possible to assemble these sandwiches in advance?

You can assemble (but not bake) the sandwiches a day ahead. Store covered in the fridge until ready to bake and serve.

→ Can I use a different cheese?

Gruyere is classic for its flavor and melt, but Emmental, Comté, or Swiss cheese are good substitutes for a similar result.

→ What can I add for extra flavor?

Minced shallots added to the béchamel boost depth. Try a sprinkle of fresh herbs for more aromatic notes.

→ How do I achieve a crisp topping?

After baking, a brief stint under the broiler browns the cheese topping and creates a crisp, golden finish.

Croque Monsieur Gruyere Ham

French bread, creamy béchamel, Gruyere, and ham baked to perfection create a decadent Parisian comfort food.

Prep Time
20 min
Cook Time
20 min
Total Time
40 min
By: Sandra

Category: Sandwich Creations

Skill Level: Medium

Cuisine: French

Yield: 4 Serves (4 sandwiches)

Dietary Info: ~

What You'll Need

→ Béchamel Sauce

01 42 grams unsalted butter
02 24 grams plain flour
03 2 bay leaves
04 355 millilitres whole milk
05 11 grams whole-grain mustard
06 11 grams Dijon mustard
07 0.5 teaspoon freshly grated nutmeg
08 0.5 teaspoon kosher salt

→ Sandwich Assembly

09 Eight 1.25-centimeter slices country-style French bread boule
10 225 grams thinly sliced deli ham
11 150 grams grated Gruyère cheese
12 1.5 teaspoons herbes de Provence

Directions

Step 01

Set oven temperature to 200°C and allow to preheat thoroughly.

Step 02

Melt butter in a medium saucepan over medium heat. Add flour and stir continuously until mixture turns golden and emits a fragrant aroma, about 4–5 minutes. Add bay leaves and gradually pour in whole milk, whisking constantly until smooth. Simmer, whisking occasionally, for approximately 5 minutes or until thickened to a sauce consistency. Remove from heat and whisk in both mustards, freshly grated nutmeg, and kosher salt. Discard bay leaves before using.

Step 03

Arrange bread slices on a work surface. Evenly spread one side of each slice with béchamel sauce. Top four slices with half of the grated Gruyère and distribute sliced ham evenly atop cheese. Cover each with the remaining bread slices, béchamel side up. Sprinkle remaining Gruyère and herbes de Provence over the top.

Step 04

Transfer assembled sandwiches to a parchment-lined baking tray. Bake for approximately 15 minutes, or until cheese is bubbling and golden. Shift tray under the broiler set to low, broiling for an additional minute to achieve a deep golden crust.

Step 05

Let sandwiches cool for several minutes. Slice each in half and serve warm.

Notes

  1. The béchamel can be prepared up to two days in advance and kept chilled; cover with plastic wrap directly touching the sauce surface to prevent a skin from forming.
  2. For heightened flavor, minced shallots may be sautéed into the roux after the initial cook.
  3. Sandwiches can be assembled, covered, and refrigerated unbaked up to one day ahead.
  4. Substitute 0.25 teaspoon ground nutmeg if whole nutmeg is unavailable.

Gear Required

  • Medium saucepan
  • Oven
  • Whisk
  • Parchment-lined baking tray
  • Sharp knife

Allergy Details

Double-check ingredients for allergens. If you’re unsure, talk to a health pro.
  • Contains milk and dairy products
  • Contains wheat and gluten

Nutrition Info (per serving)

Just for reference. It’s not a substitute for a nutritionist’s advice.
  • Calories: 650
  • Fat: 35 g
  • Carbs: 40 g
  • Protein: 35 g