Grilled Gruyere and Sweet Onion Sandwiches
Elevate your grilled cheese game with these Grilled Gruyère and Sweet Onion Sandwiches, a mouthwatering twist on a comfort food classic. Featuring layers of nutty Gruyère cheese, perfectly caramelized sweet onions, and a hint of tangy Dijon mustard, all nestled between slices of golden, buttery sourdough, this sandwich is the epitome of indulgence. Each bite delivers a perfect balance of flavors—rich, savory, and slightly sweet. With just 15 minutes of prep and 30 minutes of cook time, this recipe is ideal for a cozy lunch or a quick comfort meal. Pair with a warm bowl of tomato soup or a crisp side salad for the ultimate dining experience. Perfectly melty, golden-crisp, and packed with gourmet flavor, these sandwiches are sure to become a new household favorite.
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Recipe Information
Ingredients
- 4 tablespoons unsalted butter
- 1 large sweet onion, thinly sliced
- 0.5 teaspoon sugar
- 0.25 teaspoon salt
- 0.25 teaspoon black pepper
- 1.5 cups Gruyere cheese, shredded
- 8 slices sourdough bread
- 2 tablespoons Dijon mustard
- 2 teaspoons olive oil
Instructions
Heat 2 tablespoons of butter in a large skillet over medium heat until melted.
Add the thinly sliced sweet onion to the skillet. Sprinkle with sugar, salt, and black pepper. Stir to combine.
Cook the onions for 15-20 minutes, stirring occasionally, until they are golden brown and caramelized. Remove from heat and set aside.
Spread the Dijon mustard evenly over one side of 4 slices of bread. Top each with about 1/4 of the shredded Gruyere cheese and a portion of the caramelized onions.
Place the remaining 4 slices of bread on top of each prepared slice to form a sandwich.
Spread the remaining 2 tablespoons of butter evenly on the outer sides of the sandwiches (both top and bottom).
Heat 1 teaspoon of olive oil in a large skillet or griddle over medium heat. Place 2 sandwiches in the skillet and cook for 3-4 minutes on each side, or until the bread is golden brown and the cheese is melted.
Repeat with the remaining 2 sandwiches, adding the second teaspoon of olive oil as needed.
Remove the sandwiches from the skillet, let them cool slightly, and serve warm.
Nutrition Facts
Calories |
508 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 29.9 g | 38% | |
| Saturated Fat | 15.4 g | 77% | |
| Polyunsaturated Fat | 0.0 g | ||
| Cholesterol | 76 mg | 25% | |
| Sodium | 922 mg | 40% | |
| Total Carbohydrate | 40.6 g | 15% | |
| Dietary Fiber | 3.3 g | 12% | |
| Total Sugars | 5.6 g | ||
| Protein | 18.9 g | 38% | |
| Vitamin D | 0.4 mcg | 2% | |
| Calcium | 445 mg | 34% | |
| Iron | 2.3 mg | 13% | |
| Potassium | 214 mg | 5% | |
*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.
