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French Onion Grilled Cheese

Indulgent French Onion Grilled Cheese for Cozy Comfort

A delectable French Onion Grilled Cheese recipe that combines caramelized onions, Gruyère, and mozzarella for a comforting meal.
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Prep Time 10 minutes
Cook Time 30 minutes
Resting Time 1 minute
Total Time 41 minutes
Servings: 2 sandwiches
Course: Dinner
Cuisine: French
Calories: 450
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Caramelized Onions
  • 2 tablespoons Olive Oil Adds richness and helps caramelize onions.
  • 2 large Onions The star ingredient, providing sweetness when caramelized.
  • 1 teaspoon Thyme Adds an aromatic touch and enhances onion flavor.
  • 1 tablespoon Balsamic Vinegar Introduces a tangy depth to the caramelized onions.
For the Sandwich
  • 4 ounces Gruyère Cheese Delivers a rich, nutty flavor and excellent meltability.
  • 4 ounces Mozzarella Cheese Provides a creamy texture and additional meltiness.
  • 4 slices Sourdough Bread Forms the crispy base of the sandwich.
  • 2 tablespoons Butter For spreading on the bread to achieve a golden, crispy crust.

Equipment

  • Large Skillet

Method
 

Instructions for French Onion Grilled Cheese
  1. Heat 2 tablespoons of olive oil in a large skillet over medium heat. Add 2 large thinly sliced onions, sprinkle with salt, pepper, and fresh thyme. Cook gently, stirring frequently, for 20-25 minutes until the onions transform into deep golden brown, caramelized beauties.
  2. Once your onions are beautifully caramelized, stir in 1 tablespoon of balsamic vinegar. Cook for an additional 1-2 minutes until the vinegar has reduced slightly.
  3. While the onions finish cooking, generously butter one side of each slice of sourdough bread.
  4. Take two slices of the prepared buttered bread and place them butter-side down. Begin layering with a generous amount of shredded Gruyère cheese, followed by the caramelized onions and then shredded mozzarella cheese.
  5. Carefully transfer the assembled sandwiches to the preheated skillet and grill for 3-4 minutes on each side until golden brown and crispy.
  6. Once grilled to perfection, remove the sandwiches from the skillet and allow them to rest for about a minute before slicing diagonally.

Nutrition

Serving: 1sandwichCalories: 450kcalCarbohydrates: 45gProtein: 18gFat: 24gSaturated Fat: 12gPolyunsaturated Fat: 2gMonounsaturated Fat: 8gCholesterol: 60mgSodium: 800mgPotassium: 300mgFiber: 2gSugar: 3gVitamin A: 10IUVitamin C: 4mgCalcium: 35mgIron: 10mg

Notes

Expert tips include allowing enough time for onion caramelization, using sturdy bread, and experimenting with butter and mayonnaise for a crispy coating.

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