Grilled Cheese Sandwich with Sauteed Mushrooms and Arugula

Ingredients

• 1 cup mushrooms sliced
• 1 tablespoon olive oil or butter
• 2 cups arugula (roquette) baby
• 1 x salt and black pepper to taste
• 1 1/2 teaspoons truffle oil
• optional
• 4 slices whole wheat bread
• 1 1/2 teaspoons dijon mustard or as needed
• 1/2 cup swiss cheese or more as needed

Instructions

1. Add the olive oil or butter In a medium nonstick skillet over medium heat.
2. Stir in the mushroom, and cook until tender and most of the water has been evaporated, about 4 minutes.
3. Stir in the arugula, salt, pepper to taste and truffle oil if needed and cook until arugula just starts wilting, about 1 minute.
4. Turn off heat and set aside.
5. Butter or brush with olive oil both sides of each slice of bread and, in a separate skillet on medium heat, toast the bread, or you can toast the bread in a toaster oven or toaster.
6. After toasted, spread the dijon mustard evenly on one slice of the bread (the inside of the sandwich) and place the cooked arugula and mushroom mixture on top.
7. Sprinkle the swiss cheese evenly on the other slice of bread.
8. Cover the pan with the lid until the cheese melts.
9. Arrange the melted cheese slice on top and press the sandwich.
10. Slice diagonally and serve right away.
11. You can have some arugula on side if needed.