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Caramelized Onion and Apple Grilled Cheese Sandwich

4.25 from 4 votes
This Caramelized Onion & Apple Grilled Cheese Sandwich is a delicious fall take on a classic grilled cheese recipe. With the addition of sweet caramelized onions, crisp apples, and sage butter, it is so good and sure to be a favorite.
Prep time: 40 minutes
Cook time: 1 hour
Total time: 1 hour
Yield: 2 servings

INGREDIENTS 

  • 4 slices sourdough bread
  • 1 tablespoon fresh sage chopped
  • 6 tablespoon unsalted butter, divided room temp
  • 1 honeycrisp apple thinly sliced
  • 2 large yellow onions sliced ½ inch thick
  • 8 oz cheddar cheese grated
  • 2 oz brie cheese sliced into ½" slivers
  • 2 teaspoon kosher salt
  • 1 tablespoon olive oil

INSTRUCTIONS

  • Caramelize your onions first. Heat 2 tablespoon unsalted butter in a skillet on medium heat. Add the onions, stir every few minutes. At 10 minutes, add 1 teaspoon kosher salt. Continue to cook, stirring every few minutes for an additional 30-40 minutes until golden. Add 1 tablespoon water if the skillet starts to look dry. 
  • Combine chopped sage with 4tbsp butter and 1 teaspoon kosher salt
  • To assemble, lay down a non-buttered piece of bread. Top with brie cheese, then cheddar cheese, then apples in a single layer slightly overlapping, then ¼ cup caramelized onions, then additional cheddar cheese, ending with the top piece of bread. Spread 1 tablespoon sage butter on the top piece of bread. 
  • Heat a skillet on medium heat with 1 tablespoon olive oil. Place the sandwiches in buttered side down. Spread the remaining butter evenly on the tops of the exposed bread. Cook on each side for about 6 minutes until golden. Serve warm & enjoy! 

NUTRITION ESTIMATE PER SERVING

Calories: 1380kcal | Carbohydrates: 97g | Protein: 51g | Fat: 89g | Saturated Fat: 52g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 27g | Trans Fat: 1g | Cholesterol: 238mg | Sodium: 3875mg | Potassium: 599mg | Fiber: 7g | Sugar: 18g | Vitamin A: 2405IU | Vitamin C: 13mg | Calcium: 988mg | Iron: 6mg
Course: Main Course
Cuisine: American
Keyword: Sandwich
Author: Haley
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