1Clean mushrooms and remove stems, reserve for other use. Place caps on a plate with the gills up.
2In a small bowl, combine the oil, onion, garlic and vinegar. Pour mixture evenly over the mushroom caps and let stand for 1 hour.
3Grill over hot grill for 10 minutes. Serve immediately.
Footnotes
Note
The nutrition data for this recipe includes information for the full amount of the marinade ingredients. Depending on marinating time, ingredients, cooking method, etc., the actual amount of the marinade consumed will vary.
Tip
Aluminum foil can be used to keep food moist, cook it evenly, and make clean-up easier.