Croque Monsieur (Ham & Cheese Sandwich)

Prep Time
Cook Time
1h 15m
Ready In

"Recipe source: Bon Appetit (January 2005)"

Original recipe yields 6 servings


  • Serving Size: 1 (266.7 g)
  • Calories 430.6
  • Total Fat - 28.8 g
  • Saturated Fat - 17.3 g
  • Cholesterol - 91.5 mg
  • Sodium - 1031.3 mg
  • Total Carbohydrate - 16.3 g
  • Dietary Fiber - 1.3 g
  • Sugars - 7.2 g
  • Protein - 27.2 g
  • Calcium - 713.5 mg
  • Iron - 0.6 mg
  • Vitamin C - 5.1 mg
  • Thiamin - 0.4 mg

Step 1

In a saucepan over medium heat melt 3 tablespoons of the butter; stir in finely chopped onion and saute until soft (5-10 minutes).

Step 2

Stir in thyme sprig, bay leaf and nutmeg. Stir in flour and cook for 1 minute, stirring constantly. Whisk in 2 cups milk and bring to a boil; whisking constantly. Season with salt and pepper. ***sauce can be made one day ahead, covered and refrigerated.

Step 3

In a skillet over medium high heat melt 3 tablespoons butter and add thinly sliced onion and cook until onion turn color and are softened (8-10 minutes). Reduce heat to medium low and cook until onions are golden brown, stirring frequently (30 minutes). ***Onions can be prepared one day ahead, covered and refrigerated.

Step 4

Preheat oven to 450 degrees F.

Step 5

Line a rimmed baking sheet with foil and place a rack on the baking sheet.

Step 6

Place bread slices on rack; spread 1 tablespoon of the sauce over each bread slice. Scatter 2 tablespoons of the caramelized onions over the sauce. Sprinkle with 1/4 cup of cheese and then one once (2 slices) of the ham. Spread with 2 tablespoons of the sauce over the ham and sprinkle with 1/3 cup of the cheese.

Step 7

Bake sandwiches for 10 minutes or until cheese is brown.

Tips & Variations

No special items needed.


Daily Inspiration

This is such a wonderful comfort food sandwich. The only changes I made was to use much less onion in the sauce and only 1 onion for caramelizing since it's just the two of us. We absolutely love gruyere and ham is always a perfect match. Delicious!

(2 Feb 2021)

dienia b

love this version it made mr picky happy cause its warm and gooey on a snowy day made for billboard tag

review by:
(6 Feb 2015)