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Swiss Mushroom Melt Sandwich: The Ultimate Recipe

Swiss Mushroom Melt Sandwich: The Ultimate Recipe
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★★★★★

4.9 from 30 reviews

The Swiss Mushroom Melt Sandwich is a delightful combination of sweet caramelized onions, savory sautéed cremini mushrooms infused with garlic and thyme, melted Swiss cheese, and a touch of Dijon mustard, all grilled to golden perfection on crusty sourdough bread. This sandwich offers rich layers of flavor and texture, making it the ultimate comforting meal for mushroom and cheese lovers.

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)
  • 1 tablespoon fresh thyme leaves
  • Salt and freshly ground black pepper to taste

For the Sandwich Assembly

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

Instructions

  1. Prepare the caramelized onions: Peel and thinly slice the yellow onions. In a large skillet, heat olive oil and butter over medium-low heat. Add onions and cook slowly for 30-45 minutes, stirring occasionally until deep golden and soft. Stir in brown sugar and balsamic vinegar; cook 2-3 minutes until absorbed. Season with salt and pepper and set aside.
  2. Sauté the mushrooms: Clean and slice the cremini mushrooms. In the same skillet, heat olive oil over medium-high heat. Add mushrooms and cook 8-10 minutes until browned, stirring occasionally. Add minced garlic and fresh thyme; cook 1 minute until fragrant. Deglaze with white wine by adding it to the pan and scraping browned bits, cooking until mostly evaporated. Season with salt and pepper and set aside.
  3. Assemble the sandwiches: Butter one side of each slice of sourdough bread. On the non-buttered side, spread Dijon mustard if using. Layer Swiss cheese slices, followed by a generous portion of caramelized onions and sautéed mushrooms. Top with the other slice of bread, buttered side out.
  4. Grill the sandwiches: Heat a skillet or griddle over medium heat. Cook the sandwiches for 3-4 minutes per side until the bread is golden brown and the cheese is melted, pressing lightly with a spatula if desired. Remove and let cool slightly before serving.

Notes

  • For extra flavor, use cast iron skillet for caramelizing onions and sautéing mushrooms.
  • Do not overcrowd the pan when cooking mushrooms to avoid steaming instead of browning; cook in batches if needed.
  • Adjust Dijon mustard quantity or omit based on preference.
  • White wine is optional but recommended for depth of flavor; replace with vegetable broth for a non-alcoholic option.
  • Use sturdy bread like sourdough that can hold the fillings and toast nicely.
  • To keep sandwiches warm, wrap in foil after grilling.

Nutrition

Keywords: Swiss mushroom melt sandwich, caramelized onions sandwich, sautéed mushroom sandwich, grilled cheese with mushrooms, vegetarian sandwich recipe

Find it online: https://tastemadebyclara.com/swiss-mushroom-melt-sandwich-the-ultimate-recipe/