# Ingredient List:
→ Vegetables
01 - 1 cup cremini or white button mushrooms, cleaned and sliced
02 - 1 small shallot, finely chopped
03 - 1 clove garlic, minced
→ Dairy
04 - 4 slices Swiss cheese
05 - 2 tablespoons unsalted butter, softened, plus extra for cooking
→ Bread
06 - 4 slices rye bread
→ Seasonings and Oils
07 - 1 tablespoon olive oil
08 - Salt and black pepper to taste
09 - 1 teaspoon fresh thyme leaves, optional
# How-To Steps:
01 - Heat olive oil and 1 tablespoon butter in a skillet over medium heat. Add shallot and sauté for 1 minute until softened.
02 - Add mushrooms and cook, stirring frequently, for 5 to 7 minutes until golden brown and any released liquid has evaporated. Stir in garlic and thyme, then cook for 1 minute. Season with salt and black pepper. Transfer to a plate.
03 - Lay out all 4 rye bread slices. Place 1 slice of Swiss cheese on 2 of the bread slices.
04 - Divide the cooked mushroom mixture evenly between the two cheese-topped bread slices. Top each with another slice of Swiss cheese, then cover with the remaining bread slices, cheese side down.
05 - Spread softened butter evenly on the outside surfaces of both sandwiches.
06 - Wipe out the skillet and return to medium-low heat. Place sandwiches in the skillet and cook for 3 to 4 minutes per side until the bread is golden brown and the cheese is fully melted, gently pressing with a spatula as needed.
07 - Transfer sandwiches to a cutting board, slice diagonally if desired, and serve immediately while warm.