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Swiss Mushroom Melt Sandwich

Savor a Swiss Mushroom Melt Sandwich for Ultimate Comfort

The Swiss Mushroom Melt Sandwich is an indulgent treat combining savory mushrooms, caramelized onions, and Swiss cheese for ultimate comfort.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 2 sandwiches
Course: Lunch
Cuisine: American
Calories: 450
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Caramelized Onions
  • 2 medium Yellow Onions Substitute with red onions for different flavor.
  • 2 tablespoons Olive Oil Substitutable with avocado oil.
  • 1 tablespoon Butter Use non-dairy butter for a vegan option.
  • 1 tablespoon Brown Sugar Can replace with maple syrup.
  • 1 tablespoon Balsamic Vinegar Apple cider vinegar is a substitute.
  • to taste Salt
  • to taste Black Pepper
For the Sautéed Mushrooms
  • 8 ounces Cremini Mushrooms Substitutable with button or portobello mushrooms.
  • 2 cloves Garlic Fresh is recommended.
  • 2 teaspoons Fresh Thyme Leaves Dried thyme is acceptable in a pinch.
  • 1/2 cup Dry White Wine Optional, substitute with vegetable broth.
For the Sandwich Assembly
  • 4 slices Sourdough Bread Any favorite bread can be substituted.
  • 4 ounces Swiss Cheese Gruyère or mozzarella are alternatives.
  • 2 tablespoons Softened Butter Substitutable with vegan butter.
  • 2 teaspoons Dijon Mustard Optional but recommended; French’s mustard can be an alternative.

Equipment

  • Large Skillet
  • cutting board
  • Knife

Method
 

Caramelizing Onions
  1. Thinly slice the yellow onions. In a skillet, heat olive oil and butter over low heat. Add onions and sauté for 30–45 minutes, stirring until golden brown.
  2. Sprinkle in brown sugar and drizzle balsamic vinegar. Stir and cook for another 2–3 minutes until fragrant. Season and set aside.
Sautéing Mushrooms
  1. In the same skillet, heat another tablespoon of olive oil over medium-high heat. Add sliced mushrooms and sauté for 8–10 minutes until golden brown.
  2. Add minced garlic and fresh thyme, cooking for about a minute. Pour in dry white wine and simmer until reduced.
Preparing the Sandwich
  1. Butter one side of each slice of bread. Spread Dijon mustard on the unbuttered side of two slices.
  2. Layer Swiss cheese, caramelized onions, and sautéed mushrooms on the bread slices.
  3. Top with another slice of bread, buttered side up.
Toasting and Serving
  1. Cook the sandwich on medium heat for 3–5 minutes on each side until golden and crispy.
  2. Remove from skillet, cut in half, and serve warm.

Nutrition

Serving: 1sandwichCalories: 450kcalCarbohydrates: 38gProtein: 14gFat: 24gSaturated Fat: 10gPolyunsaturated Fat: 1gMonounsaturated Fat: 18gCholesterol: 45mgSodium: 650mgPotassium: 600mgFiber: 2gSugar: 6gVitamin A: 500IUVitamin C: 3mgCalcium: 300mgIron: 2mg

Notes

Be patient when caramelizing onions for best flavor. Avoid overcrowding the skillet with mushrooms for optimal browning.

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