This croque monsieur recipe is a delicious, simple, 30-minute meal perfect for a busy weeknight. Take grilled cheese to a whole new level!

This is one spiffied up grilled cheese sandwich!

I have wanted to make croque monsieur sandwiches ever since I had one in a quaint little bistro in downtown Chicago several years ago but they seemed too complicated and not worth the effort.

Despite those fears, I decided to make them for my family the other night.

They were fantastic and SO simple! It took the “make-dinner-fast” issue that usually results in plain old grilled cheese to a whole new level.

They were unique, the cheese was creamy both inside and out (thanks to the mayonnaise layer) and they were altogether delicious.

Croque Monsieur Made Simple

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  • 2 tablespoons mayonnaise
  • ¾ teaspoon Dijon mustard
  • 8 slices white bread
  • 4 thin slices ham
  • 8 thin slices Gruyere cheese, I used swiss
  • 2 tablespoons unsalted butter, melted


  • In a small bowl stir together 1 tablespoon of the mayo and the mustard. Spread evenly over 4 slices of the bread. Arrange a slice of ham and a slice of Gruyere on each piece of bread.
  • Put the remaining 4 slices of bread on top of the sandwiches. Brush the outside of both slices of bread with the melted butter. Preheat an indoor grill or heat a nonstick grill pan over medium-high heat.
  • Grill for 2 to 3 minutes on each side or until the bread is lightly browned on both sides and there are nice-looking grill marks on the bread. Using a large spatula, transfer the sandwiches to a broiling tray or cookie sheet. Preheat the broiler.
  • Spread the top of the sandwiches with the remaining tablespoon mayo and top with the 4 remaining slices cheese, being sure to cover the crusts of the bread.
  • Broil, cheese side up, for 1 to 2 minutes, or until bubbly and golden brown. Serve hot.

Recipe Source: adapted from The Family Cookbook – Debra Ponzek