Category: Vegetarian / casserole Portobello mushrooms are the steak of vegetables. Served on a bun with all the fixings, this will fulfill your craving for a great burger!
Place the mushrooms, smooth side up, in a shallow dish. In a small bowl whisk vinegar, oil, basil, oregano and garlic together. Mix in salt and pepper to taste. Let stand at room temperature for 15 minutes, turning a couple of times. Preheat grill for medium high heat. Brush grate with oil. Place mushrooms on the grill, save remaining marinade. Grill about 5 minutes on each side, until tender. Brush with marinade frequently. Top with the cheese for last couple of minutes of grilling.
These were so yummy! My husband and kids didn't even know they were mushrooms until the first bite. They cook up really small so I would suggest buying the biggest caps available unless you want to use two smaller caps per burger. The marinade is really delicious.