• Chop the garlic flakes.
• Mix olive oil, chopped garlic, vinegar,pepper and salt.
• Marinate Mushrooms in this mixture for 2 hours.
• Grill the marinated mushrooms till they turn soft.
• Spread chesse slice on buns.
• Top with a mushroom and lettuce leaf.
• Top with another bun.
• Grilled Mushroom Sandwich is ready.