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.

Nutriscore Rating: 56/100

Prep Time:15 mins

Cook Time:30 mins

Total Time:45 mins

Servings: 4

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

Directions

Step 1

Heat 2 tablespoons of butter in a large skillet over medium heat until melted.

Step 2

Add the thinly sliced sweet onion to the skillet. Sprinkle with sugar, salt, and black pepper. Stir to combine.

Step 3

Cook the onions for 15-20 minutes, stirring occasionally, until they are golden brown and caramelized. Remove from heat and set aside.

Step 4

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.

Step 5

Place the remaining 4 slices of bread on top of each prepared slice to form a sandwich.

Step 6

Spread the remaining 2 tablespoons of butter evenly on the outer sides of the sandwiches (both top and bottom).

Step 7

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.

Step 8

Repeat with the remaining 2 sandwiches, adding the second teaspoon of olive oil as needed.

Step 9

Remove the sandwiches from the skillet, let them cool slightly, and serve warm.

Nutrition Facts

Serving size	(934.2g)

Amount per serving	% Daily Value*
Calories	2429.9

Total Fat 140.2g	0%
Saturated Fat 62.4g	0%
Polyunsaturated Fat 2.7g
Cholesterol 344.3mg	0%
Sodium 4496.8mg	0%
Total Carbohydrate 221.7g	0%
Dietary Fiber 11.6g	0%
Total Sugars 20.1g
Protein 90.7g	0%

Vitamin D 36IU	0%
Calcium 1842.4mg	0%
Iron 10.1mg	0%
Potassium 750.0mg	0%

*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.

Source of Calories

Fat: 50.2%

Protein: 14.4%

Carbs: 35.3%