Grilled Portabella Steaks au Provence

4 large portabella mushrooms, wiped clean & stems removed
1/4 cup extra virgin olive oil
1 teaspoon balsamic vinegar
1 teaspoon herbes de Provence
sea salt and fresh cracked pepper to taste

In a large bowl whisk together olive oil, vinegar, herbes de Provence, salt and pepper. Add mushroom caps and toss to coat evenly. It may be easier to do these one at a time. Place coated mushrooms into a large ziploc bag, pour in any remaining liquid mixture and refrigerate for at least 20 minutes to marinate. When ready to cook, heat a large skillet or grill pan over medium-high heat, and grill mushrooms (in two batches if necessary) until cooked, about 5 minutes per side. Transfer to a plate to rest, and season with additional salt and fresh pepper if desired. Slice portabella steaks into thin slices and serve.

Serves 4.