INGREDIENTS
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Cookies
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1 stick (8 tablespoons) unsalted butter, at room temperature
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2 cups confectioners'sugar
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1 teaspoon pure vanilla extract
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4 egg whites
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1 1/2 cups all-purpose flour
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3/4 teaspoon salt
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Chocolate Ganache
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1 cup chopped chocolate
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1/2 cup heavy cream