Portobello Mushroom Burgers

Ingredients
4 portobello mushroom (large, washed, stems removed)
1⁄4 cup balsamic vinegar
2 tablespoons olive oil
1 teaspoon basil (dried)
1 teaspoon oregano (dried)
1 tablespoon garlic (minced)
1 slice provolone cheese
Instructions

1. Place the mushroom caps, smooth side up, in a shallow dish. In a small bowl, whisk together vinegar, oil, basil, oregano, garlic, salt, and pepper. Pour over the mushrooms. Let stand at room temperature for 15 minutes or so, turning twice.

2. Preheat oven to broil.

3. Place mushrooms on greased cookie sheet. Broil for 4 - 5 minutes on each side. Brush with marinade frequently. Top with cheese.