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French Onion Grilled Cheese Sandwich Recipe

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  • Author: Evelyn
  • Prep Time: 15 minutes
  • Cook Time: 45 minutes
  • Total Time: 1 hour
  • Yield: 2 sandwiches (serves 2)
  • Category: Sandwich
  • Method: Stovetop
  • Cuisine: French-American

Description

This French Onion Grilled Cheese Sandwich is a comforting and delicious fusion of caramelized onions, fresh thyme, and melted Swiss cheese, layered between buttery toasted bread. The onions are slowly cooked to a deep golden brown with a hint of sweetness and tang from sherry vinegar and Worcestershire sauce, then combined with layers of gooey Swiss cheese, creating a perfectly balanced and indulgent sandwich ideal for a cozy meal.

Ingredients

Onion Mixture

  • 2 tablespoons salted butter (softened, plus more for the bread)
  • 2 medium yellow onions (thinly sliced)
  • Water (as needed)
  • Salt and pepper (to taste)
  • ½ teaspoon fresh thyme leaves (roughly chopped)
  • 1 teaspoon Worcestershire sauce
  • 1 teaspoon sugar
  • 1 teaspoon sherry vinegar (or red wine vinegar)

Sandwich

  • 4 thick slices bread
  • 6 slices Swiss cheese

Instructions

  1. Caramelize the Onions: Melt 2 tablespoons of butter in a large sauté pan over medium heat. Add thinly sliced onions and stir them gently. Cover the pan and cook until the onions soften, about 5 minutes. Add a splash of water to loosen browned bits from the pan bottom, then cover and cook further. Repeat adding water and cooking until the onions turn a deep brown and caramelize evenly.
  2. Season the Onions: Stir in fresh thyme, Worcestershire sauce, sugar, and sherry vinegar. Season with salt and pepper to taste. Continue cooking the mixture for 2 to 3 more minutes to meld flavors. Transfer the onions to a bowl and set aside.
  3. Assemble the Sandwiches: Spread a layer of the caramelized onion mixture evenly over each slice of bread. On two slices, place a folded slice of Swiss cheese, then add more onions, followed by another slice of cheese, more onions, and one last slice of cheese. Top with the remaining bread slices and gently press down to secure the filling.
  4. Cook the Sandwiches: Preheat a large sauté pan or griddle over medium-low heat. Butter one side of each sandwich and carefully place them butter-side-down on the pan. Cook until the bread is golden brown, about 4 minutes. Meanwhile, butter the top side of each sandwich. Flip the sandwiches carefully, cooking until the other side turns golden. To melt the cheese thoroughly, splash a small amount of water onto the pan and immediately cover each sandwich with an inverted large bowl, trapping steam. Let it steam for 1 to 2 minutes until the cheese is melted.
  5. Serve: Remove the sandwiches from the pan and transfer to a cutting board. Using a serrated knife, slice each sandwich diagonally in half. Serve hot immediately for the best gooey, flavorful experience.

Notes

  • Use thick slices of sturdy bread to hold the generous filling without becoming soggy.
  • Adjust the amount of sugar for caramelization according to your onion sweetness preference.
  • If you don’t have sherry vinegar, red wine vinegar is a good substitute.
  • For a crispier crust, you can toast the bread lightly before assembling.
  • The steaming step with a bowl is key for melting the cheese perfectly within the sandwich without burning the bread.

Find it online: https://evelynscooking.com/french-onion-grilled-cheese-sandwich-recipe/