- 2 portobello mushrooms, cut into 1/2 inch pieces
- 10 tablespoons balsamic vinegar
- 4 tablespoons dried rosemary
- salt and pepper to taste
- 1 tablespoon olive oil
- In a nonporous glass dish or bowl, combine the mushrooms, vinegar, rosemary, and salt and pepper. Stir to coat. Cover, and refrigerate for at least 30 minutes.
- Preheat grill for high heat.
- Brush grate with oil, and arrange marinated mushrooms on hot grill. Turn after 2 to 3 minutes, and continue grilling until mushrooms are heated through and look wilted and black. Serve hot off the grill.