# What You'll Need:
→ 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 sautéing
→ Bread
06 - 4 slices rye bread
→ Seasonings
07 - 1 tablespoon olive oil
08 - Salt and black pepper to taste
09 - 1 teaspoon fresh thyme leaves
# Step-by-Step Guide:
01 - Heat olive oil and 1 tablespoon butter in a skillet over medium heat. Add shallot and sauté for 1 minute until softened. Add mushrooms and cook, stirring frequently, for 5 to 7 minutes until golden and liquid has evaporated.
02 - Stir in minced garlic and fresh thyme leaves, cooking for 1 minute. Season with salt and black pepper to taste. Remove from heat and set aside.
03 - Lay out rye bread slices. Place one slice of Swiss cheese on two bread slices. Distribute sautéed mushroom mixture evenly over cheese, then top each with another slice of Swiss cheese. Cover with remaining bread slices.
04 - Spread softened butter evenly on the outside of each assembled sandwich.
05 - Wipe out skillet and return to medium-low heat. Place sandwiches in skillet and cook 3 to 4 minutes per side until bread is golden brown and cheese is fully melted, pressing gently with spatula as needed.
06 - Slice sandwiches diagonally and serve warm.