INGREDIENTS
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6 ounces 54-percent bittersweet chocolate, coarsely chopped
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2 ounces unsweetened chocolate, coarsely chopped
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1 3/4 ounces all-purpose flour
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1/2 teaspoon baking powder
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1/2 teaspoon kosher salt
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4 tablespoons unsalted butter, at room temperature
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6 ounces light brown sugar
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2 large eggs, at room temperature
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1 teaspoon vanilla extract
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3 ounces 70-percent bittersweet chocolate, coarsely chopped
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3 ounces 40-percent milk chocolate, coarsely chopped
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2 ounces cocoa nibs