Ingredients
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2 ½ pounds cleaned and sliced fresh mixed mushrooms
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2 tablespoons olive oil
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2 tablespoons unsalted butter
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1 ¼ teaspoons kosher salt
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½ teaspoon black pepper
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½ cup chopped shallots (from 2 medium shallots)
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½ cup chopped scallions (from 2 medium scallions)
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3 tablespoons all-purpose flour
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2 ½ cups unsalted vegetable stock
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2 ½ cups whole milk
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2 tablespoons chopped fresh flat-leaf parsley
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1 tablespoon chopped fresh tarragon
Directions
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Roughly chop mushrooms. Add oil and butter to a large, heavy pot and cook over medium-high until butter melts. Add mushrooms, salt, and pepper; cook, stirring often, until mushrooms are deeply browned and most of the moisture has evaporated, 8 to 10 minutes.
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Add shallots and scallions; cook, stirring often, until softened, about 4 minutes. Add flour and stir to combine. Add stock and milk, stirring and scraping to loosen any browned bits from bottom of pot. Let mixture come to a low boil and cook, stirring occasionally, until broth thickens, about 5 minutes. Remove from heat. Transfer half of mixture to a countertop blender. Secure lid on blender and remove center piece to allow steam to escape. Place a clean towel over opening and process until almost smooth; return to pot. Or use an immersion blender to pulse the soup until somewhat blended but some whole pieces of mushroom are still visible. Stir in parsley and tarragon; serve hot.
