Easy & the best tasting Marinated Mushrooms I have ever had! Found this recipe in Cook's Illustrated. Leave whole if mushrooms are small, halved if medium, quartered if large. Skillet size limits the yield of this recipe; if you would like to double it, cook the mushrooms in two separate batches but marinate them together. Thyme, parsley, or basil makes a good last-minute addition--use only one, however, not all three. Enjoy!!