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Parmesan-Crusted Grilled Cheese Sandwiches with Caramelized Onions

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by: Tablespoon Kitchens
Updated Jun 27, 2019
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We’re not being dramatic when we say this is probably the best grilled cheese sandwich on the face of the planet. Yes, there are rich balsamic-caramelized onions wedged between melty Cheddar on the inside, but it is what’s happening on the outside that’s truly revolutionary. Before hitting the pan, the bread is slathered in butter and doused in Parmesan cheese, then it’s grilled to crispy, crunchy perfection. Let’s just say there’s a reason we’ve given this sandwich the nickname Million Dollar Grilled Cheese.

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Parmesan-Crusted Grilled Cheese Sandwiches with Caramelized Onions

  • Prep Time 50 min
  • Total 50 min
  • Servings 4
  • Ingredients 9
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Ingredients

  • 1 tablespoon vegetable oil
  • 1/3 cup plus 1 tablespoon butter, softened
  • 1 large onion, sliced (about 2 cups)
  • 2 teaspoons balsamic vinegar
  • 1/2 teaspoon sugar
  • 1/4 teaspoon salt
  • 8 slices sourdough bread
  • 2 cups shredded sharp Cheddar cheese (8 oz)
  • 1 1/2 cups finely shredded Parmesan cheese (6 oz)

Instructions

  • Step 
    1
    In 10-inch skillet, heat oil and 1 tablespoon butter over medium-high heat. Add onions; cook about 5 minutes, stirring frequently, until onions begin to brown. Reduce heat to medium-low; cook 15 to 20 minutes, stirring frequently, until onions are golden brown. Add balsamic vinegar, sugar and salt; cook and stir 1 to 2 minutes or until onions are dark brown. Transfer onions to bowl; cool 10 minutes.
  • Step 
    2
    Spread 2 teaspoons butter on one side of each slice of bread. On the unbuttered side of 4 bread slices, place 1/2 cup Cheddar cheese. Top each with 2 tablespoons caramelized onions and 1 slice remaining bread, buttered side out. Place Parmesan cheese in shallow dish; carefully press both the buttered sides of each sandwich into Parmesan cheese to make cheese stick to bread.
  • Step 
    3
    Heat 12-inch nonstick skillet over medium heat. Add sandwiches; cook uncovered 4 to 5 minutes or until bottoms are golden brown. Carefully turn; cook 2 to 3 minutes longer or until bottoms are golden brown and Cheddar cheese is melted.

Nutrition

960 Calories
55g Total Fat
42g Protein
74g Total Carbohydrate
9g Sugars

Nutrition Facts

Serving Size: 1 Sandwich
Calories
960
Calories from Fat
490
Total Fat
55g
84%
Saturated Fat
30g
152%
Trans Fat
1 1/2g
Cholesterol
135mg
44%
Sodium
2020mg
84%
Potassium
300mg
8%
Total Carbohydrate
74g
25%
Dietary Fiber
3g
13%
Sugars
9g
Protein
42g
% Daily Value*:
Vitamin A
30%
30%
Vitamin C
2%
2%
Calcium
100%
100%
Iron
30%
30%
Exchanges:
4 1/2 Starch; 0 Fruit; 1/2 Other Carbohydrate; 0 Skim Milk; 0 Low-Fat Milk; 0 Milk; 0 Vegetable; 0 Very Lean Meat; 1/2 Lean Meat; 3 1/2 High-Fat Meat; 4 1/2 Fat;
Carbohydrate Choice
5
*Percent Daily Values are based on a 2,000 calorie diet.

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