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Caramelized Onion Grilled Cheese Sandwiches With Miso Butter

Here's how you make Caramelized Onion Grilled Cheese Sandwiches With Miso Butter
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  • Servings: 2
  • Prep: 15m
  • Cook: 1.07h
    • The following recipe serves 2 people.

Ingredients

The ingredients are:
  • 1 tablespoon extra-virgin olive oil
  • 1 large yellow onion (1 pound), thinly sliced
  • 1/8 teaspoon kosher salt
  • 1 tablespoon rice vinegar, preferably unseasoned
  • 3 tablespoons unsalted butter, at room temperature (may substitute vegan butter, such as Earth Balance), divided
  • 2 teaspoons white or dark miso paste
  • 1 tablespoon whole-grain mustard
  • 4 slices good-quality sandwich bread
  • 4 ounces grated Gruyere cheese (1 cup; may substitute vegan shredded cheese, such as Violife or Daiya)
  • Cornichons (a.k.a. gherkins), for serving (optional)
We recommend you get your ingredients ready before you start cooking. Once you're ready, here are the steps to making this delicious recipe

How to Make

  • Step 1: In a large skillet over medium-high heat, heat the oil until shimmering. Add the onion and salt and cook, stirring often, until the onions start to soften and brown, 5 to 6 minutes. Reduce the heat to medium-low and cook, stirring occasionally, until the onions are deeply browned and sticky, 30 to 45 minutes. Stir in the vinegar. Transfer the onions to a small bowl.

  • Step 2: In a small bowl, mix 1 tablespoon butter with the miso paste and mustard. Spread one side of each bread slice with the miso butter. Spread the other sides with the remaining 2 tablespoons butter.

  • Step 3: Return the skillet to medium-low heat. Place two of the bread slices, plain-buttered-side down, in the skillet. Divide the cheese and onions evenly between them and top with the other bread slices, plain-buttered-side up. (You want the miso butter on the inside of the sandwiches.) Cook until the bread is golden brown, 5 to 7 minutes. (Resist the urge to press the sandwich with a spatula.) Flip the sandwiches over and cook on the other side until the bread is golden brown and the cheese is melted, 5 to 7 minutes. Transfer to plates and serve with cornichons, if desired.

We hope you enjoy this recipe!

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