Mushroom Caps Stuffed with Olives and Porcini Recipe
Preheat the oven to 325°. Grease a 9-by-13-inch baking dish with the oil.
In a small bowl, combine the dried mushrooms and hot water. Add a pinch of salt and let stand for 20 minutes.
Meanwhile, wipe the white mushrooms clean. Trim off the stem ends, separate the stems from the caps and finely chop the stems. You should have about 1 cup. Set aside (save any extra for another use).
Place the mushroom caps, gill-side up, in the prepared baking dish. In a small bowl, mash 2 tablespoons. of the butter with a pinch each of salt and pepper. Divide the butter evenly among the caps. Bake the caps for 10 minutes, until heated through and a little moisture is released. Remove from the oven and raise the oven temperature to 400.
While the caps are baking, rub the dried mushrooms between your fingers in the soaking water to remove any grit, then lift out the mushrooms, squeeze them dry over the bowl and finely chop them. Slowly pour the mushroom-soaking liquid into a frying pan, stopping when you reach the grit at the bottom of the bowl. Add the chopped dried mushrooms and fresh mushroom stems to the frying pan and bring slowly to a simmer over medium-low heat. Turn down the heat to low and simmer gently, stirring occasionally, until all the liquid has evaporated and the mushroom stems are tender, about 15 minutes.
Transfer the mushroom mixture to a bowl and let cool to room temperature. Add the remaining 2 tablespoons of butter, the parsley, oregano, lemon juice and olives and work together with a fork until evenly mixed. Season with salt and pepper, then stuff each mushroom cap with about 1 tablespoon of the mixture. (At this point, the stuffed mushroom caps can be covered and refrigerated overnight before continuing.)
Bake the caps until tender when pierced with a toothpick and sizzling, 10 to 15 minutes. Serve hot or lukewarm.
From Unforgettable: The Bold Flavors of Paula Wolfert's Renegade Life, © 2017 by Emily Kaiser Thelin, M&P; originally published in Mediterranean Clay Pot Cooking by Paula Wolfert. Copyright (c) 2009 by Paula Wolfert. Used by permission of Houghton Mifflin Harcourt. All rights reserved.