Instructions

1. Preheat-grill on a medium-high heat. Place the mushroom caps, smooth side up, in a shallow dish. In a small bowl, whisk together the vinegar, oil, basil, oregano, garlic, salt, and pepper – Pour over the mushrooms. Let stand at room temperature for 15 minutes, turning twice.
2. Brush grate with oil. Place mushrooms on the grill, reserving marinade for basting. Grill for 5 to 8 minutes on each side, or until tender. Brush with marinade frequently. Top with cheese during the last 2 minutes of grilling.
3. Serve on a burger bun with Keelings lettuce & red peppers and your chosen sauce.