Grilled Balsamic Portobello Mushroom Burger

Ingredients

• 4 large portabella mushrooms, 5 inches in diameter
• 1/3 cup balsamic vinegar
• 1/2 cup water
• 1 tablespoon sugar
• 1 garlic clove, minced
• 1/4 teaspoon cayenne pepper (optional)
• 2 tablespoons olive oil

Directions

1. 1

   Clean mushrooms with a damp cloth and remove their stems. Place in a glass dish, stem (gill) side up.

2. 2

   To prepare the marinade, in a small bowl whisk together the vinegar, water, sugar, garlic, cayenne pepper and olive oil. Drizzle the marinade over the mushrooms. Cover and marinate in the refrigerator for about 1 hour, turning mushrooms once.

3. 3

   Prepare a hot fire in a charcoal grill or heat a gas grill or broiler. Away from the heat source, lightly coat the grill rack or broiler pan with cooking spray. Position the cooking rack 4 to 6 inches from the heat source.

4. 4

   Grill or broil the mushrooms on medium heat, turning often, until tender, about 5 minutes on each side. Baste with marinade to keep from drying out. Using tongs, transfer the mushrooms to a plate and serve immediately.