SERVES: 6
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In a large heavy saucepan, cook mushrooms in the broth with onion and thyme until tender, about 10 to 15 minutes.
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In blender or food processor, puree the mixture , leaving some chunks of vegetable in it. Set aside.
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In the saucepan, melt the butter, whisk in the flour until smooth. Add the salt, pepper, half and half and vegetable puree. Stirring constantly, bring soup to a boil and cook until thickened. Adjust seasonings to taste, and add sherry.
https://www.allrecipes.com/recipe/13096/cream-of-mushroom-soup-i/