Ingredients 6 Medium/Large Portobello Mushrooms (or as many burgers as you want to make) ¼ Cup Balsamic Vinegar 2 tsp Extra Virgin Olive Oil 1 tsp minced Garlic 1 tsp Oregano/Basil Ground Pepper, to taste Optional: Your choice of Vegan Cheese Tomato, sliced (for topping) 1 Green Onion, chopped (for garnish/topping) Directions Wash mushrooms, remove stems carefully. Place mushroom caps in a shallow dish. In a small bowl, mix together the Vinegar, Olive Oil, Oregano, Garlic and Pepper. Pour mixture over mushrooms. Let stand at room temperature for 15 minutes, turning at least once during that time. Preheat a non-stick skillet to low-medium heat. Place mushrooms on skillet and cook for 5-8 minutes on each time or until tender. Top with the cheese, tomato and green onion in the last couple of minutes of cooking.