6 ounces bittersweet chocolate, coarsely chopped |
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2 ounces unsweetened chocolate, coarsely chopped |
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2 teaspoons instant espresso powder |
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1/4 cup plus 2 tablespoons all-purpose flour |
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1/4 teaspoon baking powder |
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3/4 stick (6 tablespoons) unsalted butter, slightly softened |
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1/4 cup packed light brown sugar |
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2 teaspoons vanilla extract |
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1/2 cup toasted pecans, coarsely chopped |
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1/2 cup semisweet chocolate chips |
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1/2 cup best-quality white chocolate chips |
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