Mushroom & Goat Cheese Sandwiches

• Ready In: 27 mins
• Serves: 4

Ingredients

• 2  tablespoons  balsamic vinegar
• 1  tablespoon olive oil
• 1⁄2 teaspoon salt
• 1⁄4 teaspoon pepper
• 1⁄2 teaspoon thyme
• 4  large portabella mushroom caps, each about 4 ounces
• 1⁄2 cup red onion, very thinly sliced
• 1  cup arugula leaf
• 4  sourdough  sandwich buns, split
• 4  ounces  goat cheese

Directions

1. Whisk vinegar, oil, salt, pepper and thyme.
2. Using a pastry brush, spread dressing on the mushroom caps.
3. Heat a large nonstick skillet over medium high.
4. Add mushrooms and cook 5 to 6 minutes.
5. Turn mushrooms and add onions; cook 5 to 6 minutes, until mushrooms are tender and the onions softened.
6. Spread bottom half of each roll with 1/4 of the cheese.
7. Add arugula, then a mushroom, onions and other half of roll.