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Swiss Mushroom Melt Sandwich Recipe

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★★★★★

4.5 from 58 reviews

A delicious Swiss Mushroom Melt Sandwich featuring slow-cooked caramelized onions, sautéed cremini mushrooms with garlic and thyme, and melted Swiss cheese on buttery toasted sourdough bread. This savory sandwich combines rich, earthy flavors and a perfect gooey melt, ideal for a comforting lunch or dinner.

Ingredients

Scale

For the Caramelized Onions:

  • 2 large yellow onions, thinly sliced
  • 2 tablespoons olive oil
  • 1 tablespoon butter
  • 1 teaspoon brown sugar
  • 1/2 teaspoon balsamic vinegar
  • Salt and freshly ground black pepper to taste

For the Sautéed Mushrooms:

  • 1 pound cremini mushrooms, sliced
  • 2 tablespoons olive oil
  • 2 cloves garlic, minced
  • 1/4 cup dry white wine (optional, but recommended)
  • 1 tablespoon fresh thyme leaves
  • Salt and freshly ground black pepper to taste

For the Sandwich Assembly:

  • 4 slices sourdough bread (or your favorite bread)
  • 4 ounces Swiss cheese, thinly sliced
  • 2 tablespoons butter, softened
  • 1 tablespoon Dijon mustard (optional)

Instructions

  1. Caramelize the Onions: Peel and thinly slice the yellow onions. Heat olive oil and butter in a large skillet over medium-low heat. Add onions and stir to coat. Cook slowly for 30-45 minutes, stirring occasionally, until deep golden brown and soft. Stir in brown sugar and balsamic vinegar, cooking 2-3 more minutes until absorbed. Season with salt and pepper, then set aside.
  2. Sauté the Mushrooms: Clean and slice cremini mushrooms. In the same skillet, heat olive oil over medium-high heat. Add mushrooms and cook, stirring occasionally, until browned and softened (8-10 minutes). Add minced garlic and thyme; cook for 1 minute. Deglaze pan with white wine if using and let it reduce nearly completely. Season with salt and pepper and set aside.
  3. Prepare the Bread: Lightly butter one side of each slice of sourdough bread. Optionally spread Dijon mustard on the unbuttered side of two slices.
  4. Assemble the Sandwich: Place bread slices butter-side down in a clean skillet over medium-low heat. Add half of the Swiss cheese on each slice. Layer caramelized onions and sautéed mushrooms over cheese on one slice, then stack the other slice of bread on top, butter side down.
  5. Melt and Toast: Cook sandwiches for 3-5 minutes per side until cheese is melted and bread is golden brown and toasted. Cover skillet with a lid if needed to help cheese melt.
  6. Serve: Remove sandwiches from skillet, cut in half, and serve immediately for the best gooey, savory melt experience.

Notes

  • Use quality sourdough bread and fresh mushrooms for best flavor.
  • Be patient with caramelizing onions; low and slow cooking is key.
  • Adjust salt and pepper seasoning to your taste during cooking.
  • Experiment with other cheeses like Gruyere, provolone, or cheddar for variation.
  • Add sauces like garlic aioli, pesto, or balsamic glaze for an extra flavor layer.

Keywords: Swiss Mushroom Melt, caramelized onions, sautéed mushrooms, Swiss cheese sandwich, sourdough sandwich, vegetarian sandwich, comfort food, easy lunch, melted cheese sandwich

Find it online: https://ellaeatsdaily.com/swiss-mushroom-melt-sandwich-recipe/