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Caramelized Onion & Apple Grilled Cheese Sandwich

A sweet and savory grilled cheese sandwich filled with caramelized onions, tender apples, and melty cheese.
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Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Servings: 2 sandwiches
Course: Dinner, Lunch
Cuisine: American
Calories: 420
Ingredients Equipment Method Notes

Ingredients
  

Sandwich
  • 2 tbsp unsalted butter divided
  • 1 large yellow onion thinly sliced
  • 1 medium apple thinly sliced
  • 1 tsp brown sugar
  • 4 slices rustic bread
  • 4 slices cheese Gruyère or cheddar

Equipment

  • Skillet
  • Spatula
  • Knife
  • Cutting board

Method
 

  1. Caramelize onions slowly in butter over medium-low heat until golden.
  2. Add apples and brown sugar; cook until tender.
  3. Assemble sandwiches with cheese and onion-apple mixture.
  4. Grill in buttered skillet until golden and cheese is melted.

Notes

Serve immediately for best texture and flavor.