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–+ servings
Adriana Rose

French Onion Grilled Cheese Sandwich: A Must-Try Recipe!

A delicious twist on the classic grilled cheese, featuring caramelized onions and a blend of Gruyère and mozzarella cheeses.
Print Recipe
Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Servings: 2 servings
Course: Sandwich
Cuisine: French
Calories: 550
Ingredients Method Nutrition Notes

Ingredients
  

  • 2 tablespoons unsalted butter
  • 1 medium onion thinly sliced
  • 1 teaspoon sugar
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1/2 cup beef or vegetable broth
  • 4 slices sourdough or French bread
  • 4 ounces Gruyère cheese shredded
  • 2 ounces mozzarella cheese shredded
  • 1 tablespoon fresh thyme leaves optional
  • 1 tablespoon olive oil

Method
 

  1. Melt the butter in a skillet over medium heat.
  2. Add the sliced onions, sugar, salt, and pepper. Cook for about 15-20 minutes, stirring occasionally, until the onions are caramelized and golden brown.
  3. Pour in the broth and cook for an additional 5 minutes, allowing the liquid to reduce slightly. Remove from heat and stir in the thyme if using.
  4. Heat a separate skillet over medium heat. Brush one side of each slice of bread with olive oil.
  5. On the unbrushed side, layer half of the Gruyère cheese, followed by a generous spoonful of the caramelized onion mixture, then the mozzarella cheese, and finally the remaining Gruyère cheese. Top with another slice of bread, brushed side up.
  6. Place the sandwich in the heated skillet and cook for 3-4 minutes until golden brown.
  7. Carefully flip the sandwich and cook for another 3-4 minutes on the other side, pressing down gently with a spatula.
  8. Remove from the skillet, slice in half, and serve warm.

Nutrition

Serving: 1sandwichCalories: 550kcalCarbohydrates: 40gProtein: 22gFat: 30gSaturated Fat: 15gPolyunsaturated Fat: 10gCholesterol: 70mgSodium: 800mgFiber: 2gSugar: 5g

Notes

  • To enhance the flavor, try adding a splash of balsamic vinegar to the onions while they cook.
  • For a vegetarian option, use vegetable broth instead of beef broth.

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