Portabella Mushrooms - cooking recipe

Ingredients

4 portabella mushrooms
1/4 cup olive oil
3 tablespoons balsamic vinegar
2 teaspoons fresh thyme, Chopped (or 1/2 tsp/2 mL dried)
1 pinch salt
1 pinch pepper
1 ounce parmesan cheese, shaved

Preparation

Remove thick end of mushroom stem, leaving about 1/2 inch (1 cm) attached to cap.
Place, smooth side up, in large, shallow glass dish.
Combine oil, vinegar, thyme, salt and pepper; pour over mushrooms, turning and brushing to coat evenly.
Let stand for 15 minutes.
Reserving marinade, place mushrooms, smooth side down, on greased grill over medium-high heat; close lid and cook for 5 minutes.
Turn and baste with marinade; cook, covered, for about 3 minutes or until mushrooms yield to the touch when pressed.
Arrange Parmesan over top; cook, covered, for about 2 minutes or until melted.