Description
All the flavors of a classic French onion soup, but quicker to make and portable! Gruyère cheese, slow-caramelized onions, thyme and parsley are griddled in between sourdough bread until melted and ooey-goeey on the inside, and crisp and golden brown on the outside. Consider all of your French onion soup cravings handled with this sandwich!
Ingredients
Scale
- 3 tablespoons butter
- 2 large sweet onions, very thinly sliced
- 1 teaspoon finely chopped fresh thyme
- Kosher salt and freshly ground black pepper, to taste
TO ASSEMBLE:
- 2 tablespoons butter, at room temperature
- 2 tablespoons mayonnaise, at room temperature
- 1/2 teaspoon fresh thyme, minced
- 4 slices sourdough bread
- 6 ounces freshly grated Gruyère cheese
- 2 tablespoons chopped fresh flat-leaf parsley
Instructions
- In a large, heavy-bottomed pan, melt the butter over medium-low heat. Add the onions and sprinkle with salt. Cook, stirring occasionally, until golden and caramelized, about 40 to 50 minutes.
- Heat a large nonstick skillet or griddle over medium heat. Combine the mayonnaise and butter and mash together until fully combined; stir in the 1/2 teaspoon chopped thyme. Spread one side of each piece of bread with this mixture. Flip the bread over to the unbuttered side and place 1/4 of the cheese on two slices. Place half of the onions on each top and the remaining cheese and parsley. Top with the second piece of bread. Transfer the sandwiches to the preheated skillet and cook until golden brown and the cheese is melted, about 5 to 6 minutes per side.
Notes
Inspiration: Gruyère French Onion Grilled Cheese from The Pretty Dish by Jessica Merchant
- Category: Sandwiches & Wraps, Grilled Cheese