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French Onion Grilled Cheese

Ultimate French Onion Grilled Cheese Recipe finished dish

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This French Onion Grilled Cheese combines the rich flavors of caramelized onions with gooey Swiss and Gruyère cheeses, all grilled between slices of crispy French bread. It’s a comforting and indulgent twist on a classic sandwich, perfect for any meal.

Ingredients

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  • 1 large onion, thinly sliced
  • 4 slices French bread
  • 4 slices Swiss cheese
  • 2 tablespoons mayonnaise
  • 1/2 cup shredded Gruyère cheese
  • 2 tablespoons unsalted butter
  • 1 teaspoon sugar
  • Salt and pepper to taste

Instructions

  1. Melt butter in a skillet over medium heat. Add thinly sliced onions and cook until caramelized, about 15 minutes.
  2. Sprinkle sugar over onions and continue cooking until golden brown. Season with salt and pepper to taste.
  3. Spread mayonnaise on one side of each slice of French bread. On the other side of two slices, layer Swiss cheese, caramelized onions, and shredded Gruyère cheese. Top with the remaining bread slices, mayonnaise side facing out.
  4. Heat a skillet over medium heat. Place sandwiches in the skillet and cook until golden brown on both sides and cheese has melted, about 3-4 minutes per side.
  5. Cut sandwiches in half and serve hot.

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