Filed Under: broil, Cheese, sandwichwrap, School Lunch, Under 20 Mins

Open-Faced Croque Monsieur with Tomato

Gooey and cheesy with the right amount of crunch, this classic sandwich gets a seasonal update with the addition of ripe tomatoes and fragrant basil leaves. Perfect for patio dining with a tall glass of something cold.

April 8th, 2012

Recipe Developed by Paula Bowman

Prep Time
5 minutes
Cook Time
15 minutes
  • 4 slices sourdough bread
  • 2 tablespoons unsalted butter
  • 2 tablespoons all-purpose flour
  • 1 pinch nutmeg
  • 1 1/4 Cups milk
  • 3 ounces finely grated emmenthal or gruyere cheese (about 1 cup)
  • 4 slices black forest ham
  • 8 basil leaves
  • 4 small tomatoes, sliced
  • 4 Cups baby arugula or mixed baby greens
  • 12 tablespoons extra-virgin olive oil
  • 1/4 teaspoons finely grated lemon zest
  • 2 teaspoons fresh lemon juice
  1. Preheat oven to 400°F.

  2. Arrange bread in a single layer on a rimmed sheet pan and toast in oven, flipping once, until golden brown, about 8 minutes. Remove from heat, keep toast on sheet pan and set aside. Preheat broiler to high.

  3. Meanwhile, in a saucepan set over medium heat, melt butter. Add flour and nutmeg and stir with a wooden spoon for 1 minute. Gradually whisk in milk and cook, stirring, until mixture comes to a boil and thickens, about 2 minutes. Add ½ cup cheese, stir well and season to taste with salt and freshly ground black pepper. Spread a thin layer of cheese sauce (about 1 tablespoon) over each slice of toast. Cover with a slice of ham, followed by another even layer (about 3 tablespoons) of cheese sauce. Arrange basil and tomato slices on top of cheese sauce, season tomatoes with salt and pepper and sprinkle with remaining ½ cup cheese. Place under broiler, 6 inches from heat and cook until sauce is bubbling and cheese is golden brown, about 6 to 8 minutes.

  4. In a bowl, toss arugula, olive oil, lemon zest and juice together until well coated. Season with salt and pepper, divide mixture among 4 plates and serve alongside hot sandwiches.

Nutrients Per Serving

Nutrients per serving (based on 4 servings): 483 calories, 21 g fat, 25 g protein, 3 g fiber, 49 g carbohydrates. Excellent source of vitamin A, thiamine, riboflavin, niacin, vitamin B12, folate, calcium, zinc. Good source of vitamin B6, magnesium, iron.

Open-Faced Croque Monsieur with Tomato
Photography by Carlo Mendoza

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