INGREDIENTS
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10 tablespoons (5 ounces) unsalted butter, at room temperature
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1/4 cup (1 ounce) powdered sugar, sifted
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1-1/2 tablespoons granulated sugar, plus more for sprinkling
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3/4 teaspoon kosher salt
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1/4 cup (1 ounce) cornstarch
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1-1/4 cups (6-1/2 ounces) all-purpose flour