"The creamy Mascarpone cheese pairs wonderfully with the earthy taste of the mushrooms in this potato gratin side dish. Use a variety of wild mushrooms for an even deeper mushroom flavor...."
INGREDIENTS
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4 cups chopped wild mushrooms
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1 cup boiling water
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2 tablespoons (1/4 stick) butter
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2 tablespoons extra-virgin olive oil
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1/4 cup plus 4 tablespoons grated Parmesan cheese
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1-1/2 cups Mascarpone cheese
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1 cup whipping cream
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3 garlic cloves, chopped
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Pinch of freshly grated nutmeg
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5 large russet potatoes, peeled, cut crosswise into 1/8-inch-thick slices