INGREDIENTS
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2 tablespoons cocoa (or cacao) nibs (see Notes)
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6 tablespoons butter, softened
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1/2 cup sugar, plus extra for sprinkling cookies
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1 large egg
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1/2 teaspoon vanilla
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1 1/3 cups all-purpose flour
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1/2 teaspoon baking powder
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1/4 teaspoon salt
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Melted semisweet or bittersweet chocolate