Grilled Portobello mushroom burgers

Directions

1. Whisk vinegar with olive oil, thyme, rosemary, garlic, and salt and pepper. Pour marinade in a large plastic zip-top bag and add mushrooms. Let marinate for at least 2 hours or overnight.
2. When ready to cook, preheat grill to medium heat. Place marinated mushrooms on grill and cook 5 to 6 minutes per side. When second side is cooking, place cheese on top of mushrooms and shut lid, letting cheese melt.
3. When cheese is melted and mushrooms are cooking through, place them on buns which choice of garnishes.