INGREDIENTS
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1 ½ cups all-purpose flour
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1 teaspoon baking powder
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½ teaspoon salt
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¼ teaspoon baking soda
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½ cup (1 stick) butter, softened
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½ cup light brown sugar
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½ cup granulated sugar
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1 egg
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1 egg yolk
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6 ounces dark chocolate baking chunks
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½ cup shelled pistachios