Caramelized Onion Grilled Cheese Sandwich
Indulge in the ultimate comfort food upgrade with this Caramelized Onion Grilled Cheese Sandwich—a savory masterpiece that combines the sweet richness of perfectly caramelized onions with the melty goodness of cheddar and Gruyère cheeses. Nestled between golden, buttery slices of crisped bread, the caramelized onions add a depth of flavor that turns a classic grilled cheese into a gourmet delight. Ready in just 40 minutes and ideal for lunch or a cozy dinner, this recipe uses a simple touch of sugar and salt to enhance the onions’ natural sweetness, while the blend of sharp and nutty cheeses ensures a gooey, irresistible center. Pair it with your favorite soup for the ultimate comforting meal or enjoy it on its own for a decadent treat!
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Recipe Information
Ingredients
- 2 tablespoons unsalted butter
- 1 tablespoon olive oil
- 2 large yellow onion
- 0.25 teaspoons salt
- 0.5 teaspoons granulated sugar
- 4 slices bread slices
- 4 slices cheddar cheese
- 4 slices Gruyère cheese
Instructions
Peel and thinly slice the yellow onions into half-moons.
Heat a medium skillet over medium heat and add 1 tablespoon of butter and 1 tablespoon of olive oil.
Once the butter has melted, add the sliced onions to the skillet and stir to coat them in the butter and oil.
Sprinkle the onions with salt and sugar to help draw out their natural sweetness and moisture.
Cook the onions over medium heat, stirring frequently, for about 20-25 minutes or until they become golden brown and caramelized. If the pan seems dry, add a splash of water to prevent burning. Set the caramelized onions aside.
Spread 1/2 tablespoon of butter onto one side of each bread slice.
Place two slices of bread, buttered side down, onto a clean skillet or griddle over medium heat.
Top each slice of bread with one slice of cheddar cheese, a couple of tablespoons of caramelized onions, and one slice of Gruyère cheese. Add the second slice of bread on top, buttered side facing up.
Cook the sandwiches for about 3-4 minutes on each side, pressing gently with a spatula, until the bread is golden brown and the cheese is completely melted.
Remove the sandwiches from the skillet, let them cool for 1-2 minutes, then slice in half and serve warm.
Nutrition Facts
Calories |
752 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 46.7 g | 60% | |
| Saturated Fat | 24.6 g | 123% | |
| Polyunsaturated Fat | 0.7 g | ||
| Cholesterol | 118 mg | 39% | |
| Sodium | 1164 mg | 51% | |
| Total Carbohydrate | 53.9 g | 20% | |
| Dietary Fiber | 4.6 g | 16% | |
| Total Sugars | 11.8 g | ||
| Protein | 31.5 g | 63% | |
| Vitamin D | 0.6 mcg | 3% | |
| Calcium | 788 mg | 61% | |
| Iron | 2.6 mg | 15% | |
| Potassium | 374 mg | 8% | |
*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
