"This appetizer is not only delicious but adaptable as well. Use your choice of mushrooms, creme fraiche or sour cream, shallots or red or white onion. Make the mushrooms a few hours ahead if you like but toast the bread just before serving. Adapted from Fine Cooking magazine...."
INGREDIENTS
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1 lb mushroom (wild mushrooms, or a combination of cultivated mushrooms including portobellas, cremini, oyster, shi)
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1 tablespoon butter
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2 tablespoons olive oil (or more as needed)
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kosher salt, to taste
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fresh ground black pepper, to taste
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1/4 cup red onions or 1/4 cup white onion
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2 teaspoons fresh thyme, chopped or 1/4 teaspoon dried thyme leaves
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1/2 cup creme fraiche (I used recipe #171932) or 1/2 cup sour cream (I used
Creme Fraiche)
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1 tablespoon Italian parsley, chopped
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12 -18 slices baguette, cut 1/2 inch on diagonal
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1 1/2 tablespoons olive oil
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1/4 cup parmigiano-reggiano cheese, grated